A) Rs. 42
B) Rs. 24
C) Rs. 81
D) Rs. 18
Correct Answer: D
Solution :
(d): Let sum be 'x' Now, \[\frac{x}{3/7}-\frac{3}{7}\times x=80\] \[\Rightarrow \frac{7x}{3}-\frac{3x}{7}=80\] \[\Rightarrow 40x=1680\] \[x=42\] \[\therefore \frac{3}{7}x=18.\]You need to login to perform this action.
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