Question

If a person travels at a speed of 20 km per hour instead of 15 km per hour, he can travel 20 km more distance. Find the distance he would have covered at 15 km/hr.
1. 36 km
2. 65 km
3. 50 km
4. 90 km
5. 60 km

Answer 1

Correct Answer - Option 5 : 60 km

Given:

Speed of person is 20 km per hour instead of 15 km per hour he can travel 20 km more distance.

Calculation:

Let exact distance be X km, Then

⇒ (X/15) = {(X + 20)/20}

⇒ 20X = 15X + 300

⇒ 5X = 300

⇒ X = 300/5 = 60 km

∴ The exact distance is 60 km.