## Q & A : PSLE maths

Unlike entry to Primary Schools, admission into Secondary Schools is based on meritocracy. PSLE results are used as key admission criteria. Discuss everything related to PSLE and selection of Secondary Schools here.

### Q & A : PSLE maths

Hi

Can anybody help me with this qn?

If I buy 2 plates and 4 cups, I would have \$7 left. If I buy 4 plates and 2 cups , I would need another \$5. Given that a cup costs \$2.50, how much money do I have at first ?

Thank You

ksoh3000
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### Re: Q & A : PSLE maths

ksoh3000 wrote:Hi

Can anybody help me with this qn?

If I buy 2 plates and 4 cups, I would have \$7 left. If I buy 4 plates and 2 cups , I would need another \$5. Given that a cup costs \$2.50, how much money do I have at first ?

Thank You

Let the amount of money at first = M

2 Plates + 4 Cups + 7= M
2 Plates + 10 + 7 = M
2 Plates + 17 = M........(1)

4 Plates + 2 Cups = M+5
4 Plates + 5 = M+5
4 Plates = M...............(2)

(1) =(2)
2 Plates + 17 = 4 Plates
2 Plates = 17

At first, 17 + 17 = \$34
Last edited by kwcllf on Wed Aug 15, 2012 9:55 am, edited 1 time in total.

kwcllf
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### Re: Q & A : PSLE maths

thank you

fantasy1
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