Q&A - P5 Math

[small]

MANGO STAR:

Hi, need help for this MCQ question.


16/? is between 4/9 and 4/7

1) 25 2) 28 3) 30 4) 36

After changed 4/9 and 4/7 to 16/36 and 16/28 then you will know the answer is 30.

[small]

YumYum:

small:

[quote=\"YumYum\"]Hi, need help with this qn:


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 Ning. How much did the present cost?

Thanks

Hi YumYum,

Please refer to the following link.

http://www.kiasuparents.com/kiasu/forum/viewtopic.php&f=68&t=35175&p
=754627

Hi small,

Thanks for directing me to the link :rahrah:

Gd nite![/quote]
You are welcome YumYum.

[bndreve]

Need help on the below math question.

What is the shortest way to solve it without listing down the sequence?

Q-
A group of children shared some candy canes at a party. If each child was given 1 candy cane, 80 candy canes would be left. If each child was given 4 candy canes, 8 candy canes would be left. How many children were at the party?

[lynntan15]

can help with this Q.


Mr Zaini has a carton containing some red and green apples. If he adds in 10 red apples, 0.6 of the number of apples in the carton will be green apples. If he adds in 30 green apples, 3/4 of the number of apples in the carton will be green apples. How many apples are there in the carton?

Thank you very much.

[lynntan15]

bndreve:

Need help on the below math question.

What is the shortest way to solve it without listing down the sequence?

Q-
A group of children shared some candy canes at a party. If each child was given 1 candy cane, 80 candy canes would be left. If each child was given 4 candy canes, 8 candy canes would be left. How many children were at the party?

My attempt, not the best method.

Difference in candy cane =4-1= 3 candy canes.
Total number of candy canes redistributed (80 - = 72
72/3 = 24
There are 24 children at the party.

[YumYum]

Hi, need help with this qn:


Mrs lee spent 1/2 of her money on some almond cookies and 2/5 of the remaining money on 6 slices of butter cookies. Each slice of butter cookie costs thrice as much as one almond cookie. How many almond cookies did she buy?

Thanks

[MathIzzzFun]

lynntan15:

can help with this Q.


Mr Zaini has a carton containing some red and green apples. If he adds in 10 red apples, 0.6 of the number of apples in the carton will be green apples. If he adds in 30 green apples, 3/4 of the number of apples in the carton will be green apples. How many apples are there in the carton?

Thank you very much.

Hi

after adding 10 red apples,
Green : Red --> 3 units : 2 units

number of apples,
Green : Red --> 3 units : 2 units - 10 (Total --> 5 units -10)

if 30 green apples added,
Green : Red --> 3 units + 30 : 1 unit + 10 (3:1)
number of apples,
Green : Red --> 3 units : 1 unit + 10 (Total--> 4 units + 10)

Comparing red apples (or compare total number):
1 unit + 10 = 2 units - 10
1 unit --> 20

Total number of apples --> 4 x 20 + 10 = 90

cheers.

[usaik]

Hi I need help on the following question, particularly on how to solve and get the answer for part (b).


Mrs Tan bought 4 times as many toy guns as teddy bears. She spent $1750 altogether. A toy gun cost $10 less than a teddy bear. The total cost of toy guns was $490 more than the total cost of teddy bears.
(a) how much did Mrs Tan spend on the teddy bears?
(b) How much did one teddy bear cost?

Thank you.

[bndreve]

lynntan15:

bndreve:

Need help on the below math question.

What is the shortest way to solve it without listing down the sequence?

Q-
A group of children shared some candy canes at a party. If each child was given 1 candy cane, 80 candy canes would be left. If each child was given 4 candy canes, 8 candy canes would be left. How many children were at the party?

My attempt, not the best method.

Difference in candy cane =4-1= 3 candy canes.
Total number of candy canes redistributed (80 - = 72
72/3 = 24
There are 24 children at the party.

Thanks.

[lynntan15]

MathIzzzFun:

if 30 green apples added,
Green : Red --> 3 units + 30 : 1 unit + 10 (3:1)
number of apples,
Green : Red --> 3 units : 1 unit + 10 (Total--> 4 units + 10)
.

can elaborate further on this?

Don't really understand how 3 units + 30 : 1 unit +10? become 3 units : 1 unit + 10?

Thks very much.