Q&A - P5 Math

[MathIzzzFun]

doraemo:

please help:


1.\tThere were some orange beads and 28 red beads and green beads in a container. There were two more green beads than red beads, and 6 fewer orange beads than red. How many beads were there altogether?

28 red beads and green beads in a container. There were two more green beads than red beads.

Red beads --> (28-2)/2 = 13
Green beads --> 15
Orange beads --> 13 - 6 = 7

Total number of beads --> 28 + 7 = 35

cheers.

[MathIzzzFun]

doraemo:

please help:


2.\tJar Y has 22 more sweets than Jar Z and Jar Z has 16 more sweets than Jar X. The total number of sweets in Jars Y and Z is 5 times the number of sweets in Jar X.

(a)\tHow many sweets are there altogether?
(b)\tHow many sweets should be transferred from Jar Y to the other two Jars so that there is an equal number of sweets in all three jars?

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3 units --> 16 x 2 + 22 = 54
1 unit --> 18

Jar X --> 18 sweets
Jar Y --> 56 sweets
Jar Z --> 34 sweets
Total --> 108 sweets

108 / 3 = 36

Number of sweets to transfer:
Jar Y to Jar Z --> 36 - 24 = 2 sweets
Jar Y to Jar X --> 36 - 18 = 18 sweets
Total transferred from Jar Y to Jar X & Jar Z --> 20 sweets

cheers.

[doraemo]

Thank you very much, MathIzzzFun!!!

[Awonder]

Hi, pls help on the following Q. Thank you.


Mrs Tan baked 186 chocolate cookies and peanut cookies. After 1/4 chocolate cookies were sold and 1/5 of the peanut cookies were sold, she had the same number of chocolate cookies and peanut cookies left. How many cookies were sold altogether?

[S-H]

Can someone please help me with this question, thanks!


John bought 4 times as many candy bars as chocolate bars. The total mass of candy bars and chocolate bars was 1.64kg. The mass of chocolate bars was 0.84kg heavier than that of candy bars. The mass of 1 bar of chocolate was 0.228kg heavier than 1 candy bar. Find the number of chocolate bars John bought.

[php]

Awonder:

Hi, pls help on the following Q. Thank you.


Mrs Tan baked 186 chocolate cookies and peanut cookies. After 1/4 chocolate cookies were sold and 1/5 of the peanut cookies were sold, she had the same number of chocolate cookies and peanut cookies left. How many cookies were sold altogether?

Chocolate -> 1 - 1/4 = 3/4 = 12/16
Peanut -> 1 - 1/5 = 4/5 = 12/15

16 units + 15 units -> 186
31 units -> 186
1 unit -> 6

No of cookies sold (4 units + 3 units) -> 7 x 6 = 42

[AtoZ]

Please help:


Q1. 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?

Q2. 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 spent 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?

[Man_at_work]

Can anyone help me with this problem? Many thanks!


4 children Amos, Bala, Chris and Darren, each have some marbles. The number of marbles that Amos has is 1/2 of the total number of marbles that Bala, Chris and Darren have. The number of marbles that Chris has is 1/4 of the total Amos,Bala and Darren have. The number of marbles that Bala has is 2/3 of the total number of marbles that Amos, Chris and Darren have.

[jieheng]

S-H:

Can someone please help me with this question, thanks!


John bought 4 times as many candy bars as chocolate bars. The total mass of candy bars and chocolate bars was 1.64kg. The mass of chocolate bars was 0.84kg heavier than that of candy bars. The mass of 1 bar of chocolate was 0.228kg heavier than 1 candy bar. Find the number of chocolate bars John bought.

Candy bars 4u
Chocolate bars 1u

total mass of candy bars (4u) = (1.64 - 0.84) / 2 = 0.4

the mass of candy bars (1u) = 0.4 / 4 = 0.1

total mass of chocolate bars (1u) = 0.4 + 0.84 = 1.24

Difference between the mass of 1u of chocolate bars and candy bars
= 1.24 - 0.1
=1.14

Difference between the mass of 1 pc of chocolate bars and candy bars
=0.228

No of chocolate bars = 1.14 / 0.228 = 5 (Ans)

[jieheng]

AtoZ:

Please help:


Q1. 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?

Lisa 1u
(Ming + Nora) 4u
Total 5u

Ming 1u
(Lisa + Nora) 9u
Total 10u

Make the total the same , 10u

Lisa 2u
(Ming + Nora) 8u
Total 10u

Ming 1u
Lisa 2u
Nora 7u (10u - 1u - 2u)

7u - 1u = 6u

6u --> 60
1u --> 10

10u --> 10*10 = 100

The present cost $100