A) 3 : 10
B) 7 : 3
C) 3 : 7
D) 10 : 3
Correct Answer: A
Solution :
\[A:B:C=12:15:25\] Total part 52 one part \[=\frac{312}{52}=6\] \[A=12\times 6\,=72,\,B=15\times 6\,=90,\,C=25\times 6=150\]\[\frac{B-A}{C-B}=\frac{90-72}{150-90}=\frac{18}{60}\,=\frac{3}{10}\]You need to login to perform this action.
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