Rakhelp's answer to Jess's Primary 4 Maths Singapore question.
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no. of cars = c
no. of motorcycles = m
m+c=14, m=14-c
2m+4c= 40, substitute for m
2(14-c)+4c=40
28+2c=40
2c=12,
c=6, m=8
no. of motorcycles = m
m+c=14, m=14-c
2m+4c= 40, substitute for m
2(14-c)+4c=40
28+2c=40
2c=12,
c=6, m=8
Date Posted:
4 years ago
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