A) \[Rs.\,18\]
B) \[Rs.\,12\]
C) \[Rs.\,72\]
D) \[Rs.\,20\]
Correct Answer: D
Solution :
The number of books and their cost are directly proportional. \[\therefore \] \[9:5\,\,\,:\,\,\,:\,\,\,36:x\] \[\Rightarrow \] \[x=\frac{5\times 36}{9}=20\] \[\therefore \] Cost of 5 books \[=Rs.\,20\]You need to login to perform this action.
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