Nickal:

Hi, is there any other method to solve this question besides guess and check? Tq for the help in advance!


Some books weigh as heavy as some magazines. There are 8 more books than magazines. Each book weighs 300g and each magazine weighs 400g. How many books are there? (56 books?)

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SOS mum:

The ratio of the number of muffins to the number of pies in a bakery was 4:1. After another 63 muffins and 46 pies were baked, the ratio became 3:1. How many muffins and pies were there in the bakery at first?

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Bunnyng:

Can anyone help? Thank you!


A coin box contained only twenty-cent and fifty-cent coins in the ratio of 4:5. When 16 fifty-cent coins were taken out and replaced by some twenty-cent coins, the number of fifty-cent coins left in the box was 7/8 of the twenty-cent coins. The total value of all the coins remained the same. Find the sum of money in the coin box. (Ans $112.20)

Another explanation:
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chloecube:

hi, need help on this


Brenda had some 50 cent coins and Sally had some 20 cent coins.
Brenda had 6 fewer coins than Sally.
Sally had $2.70 less than Brenda.

a) how much money did Brenda have?
b) how many 20 cent coins did Sally have?

TIA!

For your reference: http://www.kiasuparents.com/kiasu/forum ... &p=1648989

YellowRabbit:

Hi All,


Would appreciate your help to solve the below question:

There were 3 times as many boys as girls in the school hall at first.
After 12 boys left and 8 girls entered the hall, there were 4 more boys than girls remaining in the hall.
What was the number of boys in the hall at first?


TIA

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Zero is a digit, even though it represents nothingness or no value. You can get zero from 5-5.


Zero is neither positive nor negative. It separates the positives and negatives. It is unsigned.
Non-negative refers to all the numbers that are not negative. So this refers to the positive numbers and zero.

Zero is considered an even number. There are a lot of explanations in https://www.quora.com/Is-zero-even-or-odd.

So for the \"the smallest single digit, non-negative, even number\", I'll go for zero.

Daddy

A group of pupils took part in a quiz. 1/3 of the bag and 1/6 of the girls were prize winners. There were 35 prize winners altogether and 4/7 of them were boys. What fraction of the pupils were prize winners? (Ans: 7/30)


TIA.

No. of prize winners who are boys -> 35x4/7 = 20
No. of prize winners who are girls -> 35-20 = 15

No. of boys -> 3x20 = 60
No. of girls -> 6x15 = 90

Fraction of pupils who were prize winners -> 35/(60+90) = 35/150 = 7/30.

2R-Mummy:

Pls help :


Brenda had some 50-cent coins and Sally had some 20 cent coins. Brenda had 6 fewer coins than Sally . Sally had $2.70 less than Brenda.
A) How much money did Brenda have?
B) how many 20 cent coins did Sally have?

TIA

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Crazyberry:

Can someone please help me thank you.

There are n yellow, red and blue marbles altogether. There is an equal number of yellow and red marbles. There are 5 more blue marbles than yellow marbles. How many blue marbles are there? Express your answer in terms of n.

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Crazyberry:

Hello alfretztay


Tq again for your step by step working. I will workout later as I am going out now. But I have 1 more question. I tried drawing the model few times but failed. I am very weak at drawing models. Can you please help with the model. I think I can figure out once I have the correct model.

Shop A and shop B had a total of 10400 packets of flour at first. Both shops sold 3/5 of their packets of flour. Shop B then had 520 more packets of flour than shop A. How many packets of flour did shop B have at first? Tq.

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