A shopkeeper expects a gain of 22.5% on his cost price. If in a week, his sale was of Rs. 392, what was his profit?
Rs. 18.20
Rs. 70
Rs. 72
Rs. 88.25
Explanation:
C.P. = Rs.$ \left(\dfrac{100}{122.5} \times 392\right) $= Rs.$ \left(\dfrac{1000}{1225} \times 392\right) $= Rs. 320
$\therefore$ Profit = Rs. (392 - 320) = Rs. 72.