Yeo Xing Tong's answer to Nongning's Primary 6 Maths question.
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Let comic=x and magazine=y
10x+12y=108
5x=3y
y=5/3x
Substitute y to 5/3x,
You will get 10x+12(5/3x)=108
Continue to calculate and comic will be $3.60
Hope this help!
10x+12y=108
5x=3y
y=5/3x
Substitute y to 5/3x,
You will get 10x+12(5/3x)=108
Continue to calculate and comic will be $3.60
Hope this help!
Date Posted:
6 years ago
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