Solutions:
1. Convert the days to hours:
(1 day = 24 hours)
a) 1½ days
= 1.5 × 24 = 36 hours
b) 3 days
= 3 × 24 = 72 hours
c) A fortnight
= 14 days = 14 × 24 = 336 hours
d) 3¼ days
= 3.25 × 24 = 78 hours
2. Convert into days:
(1 day = 24 hours, 1 week = 7 days)
a) 96 hours
= 96 ÷ 24 = 4 days
b) 2 weeks and 4 days
= (2 × 7) + 4 = 18 days
c) 146 hours
= 146 ÷ 24 = 6 days 2 hours
d) 4 weeks
= 4 × 7 = 28 days
3. Which of the following are leap years?
(A leap year is divisible by 4)
✔ 1952
✔ 2004
✔ 2012
✔ 2032
✔ 2028
❌ 1998
❌ 2002
❌ 2010
4. Solve:
a) Nandini’s leave (10 May to 11 July)
May: 22 days (10–31)
June: 30 days
July: 11 days
Total = 22 + 30 + 11 = 63 days
✅ She was on leave for 63 days
b) Gaurav’s family stay in Shimla
October: 19–31 = 13 days
November: 1–5 = 5 days
Total = 18 days
✅ They stayed for 18 days
c) Mrs Kaushal’s leave
Leave starts: 14 April
Leave duration: 35 days
April remaining days = 16
Remaining = 35 − 16 = 19 days in May
✅ She will rejoin duty on 19 May
Multiple Choice Questions:
6:35 p.m. = 1835 hours ✅
👉 (a)
2305 hours denotes 11:05 p.m. ✅
👉 (c)
How many weeks in a year?
👉 52 weeks ✅ (c)
1½ hours = 5400 seconds ✅
👉 (b)
360 minutes = 6 hours ✅
👉 (a)
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