Walking at 3/4 of his normal speed, Ramesh gets delayed by 20 minutes to reach home. Find the normal time it would take for Ramesh to reach home.

Correct option is C

Given
New Speed = $$\frac{3}{4}$$​ of  Normal Speed
Delay = 20 minutes

Solution
Speed Ratio = 3 : 4 (New : Normal)
Time Ratio = 4 : 3 (Inversely proportional)
Difference in time ratio = 4 - 3 = 1 unit
1 unit = 20 minutes
Normal Time (3 units) = 3 $$\times$$​20 = 60 minutes

Final Answer
So the correct answer is (c)