Question

A school starts at 8 a.m. The classes are for 5.25 hours . It takes 0.75 hour to reach school from Shally's house. It takes the same time for the return journey. At what time does Sally leave her home daily, and at what time does she reach home after school

Answer 1

5.25 hours means 5 hours 15 minutes and 0.75 hours means 45 minutes.
School starts at 8 am.
And time taken from Sally's house to school is 45 minutes.
So she will leave her house at (8 am - 45 minutes) i.e. 7: 15 am.
Duration of classes = 5 hours 15 minutes
So classes ends at = 8 am + 5 hours 15 minutes = 1: 15 pm
And time taken from school to Sally's house = 45 minutes
Therefore Sally will reach her house at = 1:15 pm + 45 minutes = 2 pm

Hope this helps :)