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Monday, May 29 2017 @ 06:20 AM CDT
 Forum Index >  Test Paper Related >  Primary 5 Matters
 Maths Question 11
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By: shirley wee (offline)  Friday, June 15 2012 @ 11:44 AM CDT (Read 676 times)  
shirley wee

Hi everybody! I am stuck with this question again.

Celestine has some twenty-cent coins and fifty-cent coins in the ratio 3 : 4. Given that all the coins add up to $104, how many fifty-cent coins does Celestine have?

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By: echeewh (offline)  Saturday, June 16 2012 @ 07:22 PM CDT  
echeewh

Hey Shirley,

Following pls find the worked solution:

Use <Number x Value method>

(3u x 20) + (4u x 50) --> 10400 (converting all to cents)
60u + 200u --> 10400
260u --> 10400
1u --> 40

Number of 50cent coins: 4u --> 4 x 40 = 160

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

Trust this helps.

Do let me know if this does not agree with your answerkey.

Cheers,
Edward

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