1.

The speed of a boat is 10 km/hr and the speed of current is 2 km/hr. What is the distance covered by the boat in downstream in 2.5 hours?1. 30 km2. 20 km3. 24 km4. 36 km

Answer» Correct Answer - Option 1 : 30 km

Given,

Speed of a boat, b = 10 km/hr

Speed of current, s = 2 km/hr

Time = 2.5 hours (in downstream motion)

Formula Used:

Downstream speed = (b + s)

Distance covered = Downstream speed × time

Calculations:

Let D be Downstream speed

Downstream speed, D = 10 + 2 = 12 km/hr

Distance covered = 12 × 2.5

Distance covered = 30 Km

∴ The distance covered by the boat in downstream in 2.5 hours is 30 Km


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