Question

7. Khushi and Keerti are twin sisters. Khushi joined a school when she was 3 years 1 month
How old was Keerti when she joined the school?
10. An express train takes 3 hours 20 minutes to cover a distance between station A an
station B. A goods train takes 5 hours 10 minutes to cover the same distance. How much
more time is taken by the goods train than the express train?
11. A musical show started at 6:30 p.m. and finished at 10:15 p.m. What was the duration of
the musical show?
12. Akash is 10 years 8 months old. His father is 30 years 9 months elder to him. How old is his father?
(Give all questions a good statement)​

Answer 1

10) 1 hour 50 minutes extra time is taken by the goods train to reach from Station A to reach to Station B.

(explaination)

Step 1. Convert 5 hours 10 minutes into minutes= 310 minutes

Step 2. Convert 3 hour 20 minutes into minutes=200 minutes.

Step 3. Subtract both the minutes like this (310-200= 110 minutes)

Step 4. Convert 110 minutes into hour and minutes.(110÷60=1 hour 50 minutes) answer= hour 50 minutes.

Rest I will edit and do it later as your question's answer is too long.