Question

The ratio of the prices of a watch and a radio is 9 ∶ 2. If the price of watch is Rs 420 more than that of a radio. Find the price of the watch.
1. Rs. 540
2. Rs. 500
3. Rs. 640
4. Rs. 340

Answer 1

Correct Answer - Option 1 : Rs. 540

Calculation:

Let the the prices of a watch and a radio are 9x and 2x respectively,

According to the question,

9x - 2x = Rs. 420

⇒ 7x = 420

⇒ x = 60

Price of the watch = 9x = 9 × 60 = Rs. 540

∴ Price of the watch is Rs. 540.