ectanz:

Anyone can help me on the following question? TIA

The masses of four bags of rice A, B, C and D were recorded. 3 bags of rice were weighed at a time.
Bags A, B and C had a total mass of 63kg.
Bags B,C and D had a total mass of 56kg.
Bags A, C and D had a total mass of 69kg.
Bags A, B and D had a total mass of 64kg.
What was the mass of Bag C?

Pictorial representation:
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alfretztay:

Daddy

A total of 360 teachers and pupils participated in tree planting. Each teacher planted 3 trees and each group of 3 pupils planted 2 trees. If 520 trees were planted, how many pupils were there? ( answer: 240)


Not sure how to explain the workings. TIA.

http://www.kiasuparents.com/kiasu/forum ... start=2340

Thanks alfretztay. I forgot I solved it before :). Anyway, I just prepared the solution again.
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whywhy:

Thanks Econphd. My girl cant comprehen your solution. May I know if there are other methods to solve this question?

Sue bought some forks & spoons in the ratio of 5:2. Each spoon cost 80 cents more than a fork. She spent $172 altogether & the amount spent on the forks was $28 more than the amt spent on the spoons.
Find the cost of each spoon.

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mrskoo123:

Pls help:

A box contained red, blue and green counters. The total number of red and green counters was 18 more than the blue counters. The total number of red and blue counters was 16 more than the green counters. If the box contained 120 counters altogether, how many red counters were there in the box?

need model and referencing

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angel:

A is given $5 more pocket money than B each week. They each spend $12 per week and save the rest. When A saves $60, B saves $20. How much pocket money does each girl have per week?

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2R-Mummy:

Pls help :


A muffin shop sold durian muffins at $3.20 each and banana muffins at $1.20 each. Daisy bought some durian muffins and Betty bought some banana muffins from the muffin shop. Daisy spend $6.80 more than Betty.

a) How many durian muffins did Daisy buy?
b) How much did Betty spend on banana muffins?

More is spent on durian muffins ($3.20) than banana muffins ($1.20).
You can try to get to a multiple of $3.20 whose value ends with a '.80'. That will be 4 durian muffins. Total $12.80.
Minus $6 (5 x $1.20) to get $6.80.
a) Daisy bought 4 durians muffins.
b) Betty spent $6 on banana muffins.

lovebin:

Hi everyone


Can help solve this problem sum?

Wei had 60 beads more than Kerry. After Wei gave 65 beads to Kerry, Kerry had 6 times as much as Wei. How much did they have altogether?

Thank you!

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5u = 60+5+5
u = 14 beads

Total number of beads has not changed.

Total beads -> 7u
Altogether, they have 7x14=98 beads.

ozora:

Need some guide. Is this question to find lCM? http://i64.tinypic.com/2v31012.jpg\"> or do I do the listing method to get age :33?

The most straightforward and easiest way is to list them out.

Here's an alternative.
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2R-Mummy:

Pls help

A piggy bank contained 48 more 50 cents than 20 cents coins. The total value of 50 cents was $72 more than the total value of 20 cent coins. How many 20 cent coins were in the piggy bank? TIA

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Champion:

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Hi! Need help with this Maths Question; :thankyou:

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