Q&A - P5 Math

[tianzhu]

S6169:

Sorry, a bit confuse here,
\"Each piece cut from Rope Q was 2/5 longer than each piece cut from Rope P\", 2/5 is fraction or refer to 2/5 m?
If it refer to the fraction, then should be 2*(1+2/5)=2.8m

Hi

Thank you for pointing out the error.

It should be 2/5 (fraction) not 2.5m

2.8 m is the correct answer.

Best wishes

[dyandp]

Hi Parents, anyone has idea how to workout this question , pls help ...


Three sisters Lisa , Ming and Nora shared the cost of a present for their father. Lisa paid 1/4 of the total share of Ming and Nora.
Ming paid 1/9 of the total share of Lisa and Nora.
Nora paid $60 more than Ming. How much did the present cost ?


Any help very much appreciated.

[dyandp]

Hi Parents, anyone has idea how to workout this question , pls help ...


Jason and Kevin were given some money each. If Jason and Kevin spent $100 and $50 each day respectively. Jason would have $1300 when Kevin had spend all his money. if Jason and Kevin spent $50 and $100 each day respectively, Jason would have $3700 when Kevin had spent all his money.
how much money was given to Jason at the beginning ?

Any help very much appreciated. :please:

[MathIzzzFun]

dyandp:

Hi Parents, anyone has idea how to workout this question , pls help ...


Jason and Kevin were given some money each. If Jason and Kevin spent $100 and $50 each day respectively. Jason would have $1300 when Kevin had spend all his money. if Jason and Kevin spent $50 and $100 each day respectively, Jason would have $3700 when Kevin had spent all his money.
how much money was given to Jason at the beginning ?

Any help very much appreciated. :please:

Hi

this was discussed in earlier posts - http://tinyurl.com/mathizzzfun-spendratio-01

cheers.

[small]

dyandp:

Hi Parents, anyone has idea how to workout this question , pls help ...


Jason and Kevin were given some money each. If Jason and Kevin spent $100 and $50 each day respectively. Jason would have $1300 when Kevin had spend all his money. if Jason and Kevin spent $50 and $100 each day respectively, Jason would have $3700 when Kevin had spent all his money.
how much money was given to Jason at the beginning ?

Any help very much appreciated. :please:

Hi,

HTH..

Kevin spent all his money thus we can make Kevin's ratios the same in both cases.

Case 1, Jason left 1300
Jason : Kevin
2 : 1
4 : 2

Case 2, Jason left 3700
Jason : Kevin
1 : 2

3u ----- 3700 - 1300
3u = 2400
1u = 800

Jason was given 4u + 1300 (case 1)
4u + 1300 ----- 4 x $800 + $1300 = $4500

[MathIzzzFun]

dyandp:

Hi Parents, anyone has idea how to workout this question , pls help ...


Three sisters Lisa , Ming and Nora shared the cost of a present for their father. Lisa paid 1/4 of the total share of Ming and Nora.
Ming paid 1/9 of the total share of Lisa and Nora.
Nora paid $60 more than Ming. How much did the present cost ?


Any help very much appreciated.

Hi
Lisa : Ming + Nora = 1: 4
Lisa : Lisa + Ming + Nora = 1: 5

Ming : Lisa + Nora = 1 : 9
Ming : Lisa + Ming + Nora : 1: 10

Lisa+Ming+Nora --> 10 units
Lisa+Ming+Nora : Lisa:Ming:Nora = 10 units : 2 units: 1unit : 7 units

Nora paid $60 more than Ming,
7units - 1 unit = $60
1 unit --> $10
10 units --> $100

Present cost $100

cheers.

[small]

dyandp:

Hi Parents, anyone has idea how to workout this question , pls help ...


Three sisters Lisa , Ming and Nora shared the cost of a present for their father. Lisa paid 1/4 of the total share of Ming and Nora.
Ming paid 1/9 of the total share of Lisa and Nora.
Nora paid $60 more than Ming. How much did the present cost ?


Any help very much appreciated.

Hi,

HTH.

Case 1:
ratio of Lisa paid to Ming and Nora ----- 1 : 4 ( 10 : 40 )

Case 2:
ratio of Ming paid to Lisa and Nora ----- 1 : 9 ( 5 : 45 )

Total in both case must be the same so that we can do the comparison

From above:
Ratio of Lisa to Ming to Nore ------ 10u : 5u : 35u

Given that Nora paid $60 more than Ming

35u - 5u = 60
30u = 60
1u = 2

Cost of the present ----- 50u
50u ----- 50 x 2 = 100

[Barbara Ng]

Hi Tianzhu


need your assistance to solve two P5 maths questions.

(1) Adeline and Emma each have some sweets. If Adeline eats 6 sweets per day and Emma eats 3 sweets per day, Adeline would have 24 sweets left by the time Emma eats up all her sweets.

If Adeline eats 3 sweets per day and Emma eats 6 sweets per day, Adeline would have 39 sweets left by the time Emma eats up all the sweets. How many sweets does each of them have?

(2) A group of people attended a party. Each of them shook hands with everyone else once only. Mary shook with five times as many girls as boys. John shook hands with six times as many girls as boys.

(a) How many people attended the party?
(b) Were there more boys or girls? How many more?

sorry to trouble you…awaiting for your reply.

Thanks

Ms Barbara Ng

[MathIzzzFun]

Barbara Ng:

Hi Tianzhu


need your assistance to solve two P5 maths questions.

(1) Adeline and Emma each have some sweets. If Adeline eats 6 sweets per day and Emma eats 3 sweets per day, Adeline would have 24 sweets left by the time Emma eats up all her sweets.

If Adeline eats 3 sweets per day and Emma eats 6 sweets per day, Adeline would have 39 sweets left by the time Emma eats up all the sweets. How many sweets does each of them have?

(2) A group of people attended a party. Each of them shook hands with everyone else once only. Mary shook with five times as many girls as boys. John shook hands with six times as many girls as boys.

(a) How many people attended the party?
(b) Were there more boys or girls? How many more?

sorry to trouble you...awaiting for your reply.

Thanks

Ms Barbara Ng

Hi

Mary shook hands with 5 times as many girls as boys:
Girls : Boys --> 5u + 1 : 1u (*+1 to include Mary), total --> 6u + 1

John shook hands with 6 times as many girls as boys:
Girls : Boys --> 5u+1 : 1u-1 = 6 : 1

So, 5u + 1 = 6 x (1u-1)
1u --> 7

Number of girls : boys = 5 x 7 + 1 : 7 = 36 : 7
Number of people at the party = 36 + 7 = 43
36-7=29
There were 29 more girls than boys.

cheers.

[MathIzzzFun]

Barbara Ng:

Hi Tianzhu


need your assistance to solve two P5 maths questions.

(1) Adeline and Emma each have some sweets. If Adeline eats 6 sweets per day and Emma eats 3 sweets per day, Adeline would have 24 sweets left by the time Emma eats up all her sweets.

If Adeline eats 3 sweets per day and Emma eats 6 sweets per day, Adeline would have 39 sweets left by the time Emma eats up all the sweets. How many sweets does each of them have?

(2) A group of people attended a party. Each of them shook hands with everyone else once only. Mary shook with five times as many girls as boys. John shook hands with six times as many girls as boys.

(a) How many people attended the party?
(b) Were there more boys or girls? How many more?

sorry to trouble you...awaiting for your reply.

Thanks

Ms Barbara Ng

Hi

Q1 is similar to this question which was discussed

\"Jason and Kevin were given some money each. If Jason and Kevin spent $100 and $50 each day respectively. Jason would have $1300 when Kevin had spend all his money. if Jason and Kevin spent $50 and $100 each day respectively, Jason would have $3700 when Kevin had spent all his money.
how much money was given to Jason at the beginning ? \"



- http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=68&t=25129&start=810

- http://tinyurl.com/mathizzzfun-spendratio-01

cheers.