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Thursday, October 19 2017 @ 03:46 AM CDT
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 Henry Park 2011 Math SA1 Paper 2 Q8
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By: kyChang (offline)  Friday, May 25 2012 @ 12:40 AM CDT (Read 1183 times)  
kyChang

Anyone can help to show the working Mr. Green

Candy was given some money to buy some stationery. She spent all her money to buy pens that cost $0.80 each.
If she had spent her money to buy highlighters that cost $1.30 each, the number of highlighters bought would be 5 fewer that the pens.
How many pens did she buy?

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By: echeewh (offline)  Saturday, May 26 2012 @ 10:24 PM CDT  
echeewh

Hey there,

Following pls find the worked solution..

Given same amt spent on both Pens (P) and Highlighters (H), the number of P bought was 5 more than H.

Implies that the cost of these 5 P was used to buy a number of H (with same total amt of money).

This is also the 'extra' money used to pay for that number of H bought (and same number of P). This 'extra' money is a result of the diff in price between 1 H and 1 P

Cost of these 5 P = 5 x 0.80 = $4

Given the price diff between 1 H and 1 P is ( 1.30 - 0.80 = 0.50 ), we have ...

Number of H bought = 4.00 รท 0.50 = 8

Hence, number of P bought = 8 + 5 = 13

========================================

Trust the above helps to clarify.

Let me know again if necessary

Cheers,
Edward

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By: kyChang (offline)  Tuesday, June 05 2012 @ 03:19 AM CDT  
kyChang

Forgot to Thank u

Laughing Out Loud

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