Madhya Pradesh Police Exam Model Paper 3

Given:
7/13 of cost of a phone = Rs. 9800
Formula:
a/b of a number = Actual number × (a/b)
Calculation:
Let cost of phone be Rs. x, then
According to the question
$\mathit{x}\times \left(7/13\right)=9800$
$\Rightarrow \mathit{x}=9800\times \left(13/7\right)$
$\Rightarrow \mathit{x}=18,200$
∴ Cost of phone is Rs. 18,200.