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.