One person sold a radio at 10% profit then he gets Rs. 748 then the C

1.	One person sold a radio at 10% profit then he gets Rs. 748 then the C.P of that radio was ………………….. A) ₹ 160 B) ₹ 140 C) ₹ 120D) ₹ 680
Answer» Correct option is (D) ₹ 680 Let cost price of radio be Rs x. \(\therefore\) Selling price = x + 10% of x = x + \(\frac{10x}{100}\) = x + \(\frac{x}{10}\) \(=\frac{11x}{10}.\) Given that selling price = Rs 748 \(\therefore\) \(\frac{11x}{10}=748\) \(\Rightarrow\) \(x=\frac{748}{11}\times10=680\) \(\therefore\) Cost price of that radio is Rs 680. Correct option is D) ₹ 680

One person sold a radio at 10% profit then he gets Rs. 748 then the C.P of that radio was ………………….. A) ₹ 160 B) ₹ 140 C) ₹ 120D) ₹ 680

Answer»

Correct option is (D) ₹ 680

Let cost price of radio be Rs x.

\(\therefore\) Selling price = x + 10% of x

= x + \(\frac{10x}{100}\) = x + \(\frac{x}{10}\) \(=\frac{11x}{10}.\)

Given that selling price = Rs 748

\(\therefore\) \(\frac{11x}{10}=748\)

\(\Rightarrow\) \(x=\frac{748}{11}\times10=680\)

\(\therefore\) Cost price of that radio is Rs 680.

Correct option is D) ₹ 680