Alamak.. Just left my office. Ok.. Try this Boys 2 units Girls 1 unit. Then adults double of boys which is 4 units...

Then the difference btw adults and girls is 3 units representing 243..find 1 unit then you'll be 243/3

Then find 2 units which represent the boys and there you have it

If still cannot I'll post up a picture later

Thks Tan Weiqiang, now my kids can go to bed liao

Erm wrong question lolz

Thanks all of you, I am so lucky!

Welcome

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Hope it helps

To check why $2800 is incorrect: if he saved $2800, then he spent $2800+$4200=$7000. With that, his salary = $7000 + $2800 = $9800. The info given was that his salary is twice amount saved in April which should be $7000.

Better to draw a model to illustrate the difference between expenditure and savings.. Then look for 1 unit..

Got it! Thanks guys:)

Cheers

Making it visual...

Hope it helps

Thks Tan Weiqiang

Welcome

The first set of models gives you the total amount.. And the total doesn't change in this question

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820g

14 apples, 10 pears, 6 oranges = 2 x 2030 = 4060 4 pears, 8 oranges = 4 x 420 = 1680 (Add both together) 14 apples, 14 pears, 14 oranges = 4060 + 1680 = 5740 (Divide by 7) 2 apples, 2 pears, 2 oranges = 5740 ÷ 7 = 820

I think the best method is guess and check. I was lucky and guessed correctly on the first try, but I would follow this process until I came to the correct amounts.

Thank you!

Don't ever use guess and check, it is unreliable and time consuming. You don't want to depend on luck during exams. There is always a method to solving maths systematically.

Adrian Ng, your starting data is wrong. It is 3 oranges, not 2. Please always check before posting, a wrong solution confuses and wastes people's time.

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by Unit/Part method (;

Or. ....

Thank u very much.. With the all this explain to my gal.. Very fast she understand n can do it herself

I still got one question .. post already no one answer.

Karen Tan which one? Wld love to let my son answers the question. He did the above.

It's answered

Thank u

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