Page 143 - Maths Class 05

Duration of Days

Example : The construction of a new basketball court in Anil’s school was to be
completed in 10 weeks 2 days. 3 weeks 4 days have passed since the

construction started. How much more time is left ?

Solution : Remaining time = 10 weeks 2 days – 3 weeks 4 days.

Think!
10 – 1 = 9 weeks 7 + 2 = 9 days
2 days < 4 days, so borrow 1 week
10 weeks 2 days = 7 days from 10 weeks.

–3 weeks 4 days 7 days + 2 days = 9 days
9 days – 4 days = 5 days
6 weeks 5 days
9 weeks – 3 weeks = 6 weeks

Hence, 6 weeks 5 days more are left for the completion of the basketball court.

Practice - 7.6
Practice - 7.6
Practice - 7.6
Practice - 7.6
1. A child is asked to complete two assignments in 4 weeks. He completed the first assignment
in 2 weeks 3 days. How much time is left for him to complete the second assignment ?
2. Sangita is 40 years old. Her brother is 14 years 8 months younger. How old is her brother ?
3. In 2 years 9 months from now, Suresh will be 13 years old. How old is Suresh now ?

4. Karan is 4 years 4 months old. Her mother is 26 years 2 months old. How old was her
mother when Karen was born ?

1. Tick ( ) the correct option. 3
a. Compare : 152 weeks 2 years 50 weeks.

i. < ii. > iii. = iv. +

b. Find the elapsed time if a train starts running at 8 : 55 a.m. and stops at 11 : 15 a.m.
i. 2 h 20 min ii. 2 h 30 min iii. 3 h 30 min iv. 2 h 25 min
2. State the time 3 h 15 min after 20:30 hours.

3. What is the fraction to 20 h of 1 day ?
4. Find the number of hours and minutes from 5 : 19 p.m. to 9 : 27 a.m.

5. How long is it from half-past 12 in the noon to quarter past 7 at night ?
6. On a long trip 3 men take turns at driving. The first drives for 2 h 20 min, the second for
2 h 50 min and the third 2 h 15 min. What was the total driving time ?

7. The difference between 6 years 2 months and 2 years 9 months is __________ years
__________ months.

Mathematics-5 143