Question

Walking 3/4 of his usual speed, A person is 10 minutes late. Find his usual time to cover a distance?
1. 30 minutes.
2. 20 minutes.
3. 40 minutes.
4. 60 minutes.

Answer 1

Correct Answer - Option 1 : 30 minutes.

Given:

Time = 10 minutes.

Formula used:

Distance = Speed × Time

Calculation:

Let the usual time be x min.

Then, Speed = 1 km/hr.

According to the question:

(1 × x) = (3/4) × (x + 10)

⇒ 4x = 3x + 30

⇒ 4x – 3x = 30

⇒ x = 30

∴ The time is 30 minutes.