Rita studies for 2 hours - Math Riddle

80.Math Riddles

It is 9 am now. Rita studies for 2 hours, takes a bath for 1 hour, and then has lunch for 1 hour. How many hours are left before 9 am tomorrow?

A.20
B.40
C.25
D.12

Explanation :  

There will be 24 hours between 9 am today and 9 pm tomorrow.

Assumption- All the activities are performed consecutively without break

Hours consumed = 2+1+1 = 4 hours

Therefore hours remaining = 24 — 4 = 20 hours before 9 am tomorrow