UP Police Constable Exam Model Paper 2

Given
A discount of 2.5 % is given on MP
CP = 39
Formula used
$\mathrm{MP}=\mathrm{SP}\left(\frac{100}{100-\mathrm{discount}\%}\right)$
here, MP = Marked price
SP = Selling price
Calculation
Let MP be x
$\Rightarrow \mathrm{MP}\times \frac{100-\mathrm{discount}}{100}=\mathrm{SP}$
$\Rightarrow \mathrm{MP}\times \frac{97.5}{100}=\mathrm{SP}$
$\Rightarrow \frac{\mathrm{MP}}{\mathrm{SP}}=\frac{100}{97.5}$
⇒ If marked price is 100 then selling price be 97.5
$\Rightarrow \mathrm{MP}=\frac{100\times 39}{97.5}$
⇒ Rs 40