Discussion Forum



1)

A man sold 18 cots for Rs. 16,800, gaining thereby the cost price of 3 cots. The Cost price of a cot is :


A) Rs. 650

B) Rs. 700

C) Rs. 750

D) Rs. 800

E) Rs. 850

Answer:

Option D

Explanation:

(S.P of 18 cots) - (C.P of 18 cots) = (C.P of 3 cots)

$\Rightarrow$ C.P of 21 cots = S.P of 18 cots = Rs. 16800.

$\Rightarrow$ C.P of 1 cot = Rs. $\left(\frac{16800}{21}\right)$

$=$ Rs. $800$.