A) 3, 5
B) 7, 9
C) 13, 22
D) 15, 25
Correct Answer: D
Solution :
[d] Let the numbers be 3x and 5x, Then, \[\frac{3x+10}{5x+10}=\frac{5}{7}\] \[\Rightarrow \]\[7\,(3x+10)=5\,(5x+10)\] \[\Rightarrow \] \[4x=(70-50)=20\]\[\Rightarrow \]\[x=5\] \[\therefore \] The numbers are \[(3\times 5)\] and \[(5\times 5),\] i.e., 15 and 25. |
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