Q102
Instead of 10%, if the students spends 15% to study other subjects and the time is taken from the time scheduled to study mathematics and if he/she used to study 20 hours per day, then their difference of time for study mathematics per day is:
A.
30 minutes
B.
45 minutes
C.
1 hour
AnswerD.
1 hour 30 minutes
Answer: Option C
Solution
Answer: Option C
Solution:
Extra time taken = 15% - 10% = 5%then difference in mathematics = 5%
∵ 100% = 20 hours
∴ 5% = 1 hours