Question

In a race, Rahul runs at a speed of 30 m/s and Sagar runs at a speed of 35 m/s. If Sagar increases his speed by 14.28% then by how much percent Rahul needs to increase his speed to match Sagar's new speed
1. 25%
2. 33.33%
3. 66.66%
4. 12.5%
5. 15%

Answer 1

Correct Answer - Option 2 : 33.33%

Given:

Speed of Rahul = 30 m/s

Speed of Sagar = 35 m/s

Increase  in speed of Sagar = 14.28%

 Calculations:

New speed of Sagar = 35 + {35 ×(1/7)}

⇒ 35 + 5

⇒ 40 m/s

Percentage difference between new speed of Sagar and speed of Rahul = {(40 - 30)/30} × 100

⇒ (10/30) × 100

⇒ 33.33%

∴ Rahul needs to increase his speed by 33.33% to match Sagar's new speed.