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\\November 23, 2023 10:50 AM Surender Prajapati Proof 5 Reader _________________________ Date: ___________________74

example 2: Convert the following:
(a) 10 hours into minutes (b) 8 hours 42 minutes into minutes

(c) 3 days 11 hours 30 minutes into minutes

Solution:
(a) Since, 1 hour = 60 minutes

So, 10 hours = (10 × 60) minutes = 600 minutes

(b) 8 hours 42 minutes = 8 hours + 42 minutes

= (8 × 60) minutes + 42 minutes

= 480 minutes + 42 minutes = 522 minutes
(c) 3 days 11 hours 30 minutes

= 3 days + 11 hours + 30 minutes

= (3 × 24) hours + 11 hours + 30 minutes ( 1 day = 24 hours)

= (72 hours + 11 hours) + 30 minutes

= 83 hours + 30 minutes
= (83 × 60) minutes + 30 minutes ( 1 hour = 60 minutes)

= 4980 minutes + 30 minutes

= 5010 minutes

example 3: Convert the following:
(a) 7 days into hours (b) 5 days 18 hours into hours

Solution:

(a) Since, 1 day = 24 hours
So, 7 days = (7 × 24) hours = 168 hours

(b) 5 days 18 hours = 5 days + 18 hours

= (5 × 24) hours + 18 hours ( 1 day = 24 hours)

= 120 hours + 18 hours

= 138 hours
example 4: Convert the following:

(a) 3 weeks 5 days into days (b) 11 years 9 months into months

Solution:
(a) 3 weeks 5 days = 3 weeks + 5 days

= (3 × 7) days + 5 days ( 1 week = 7 days)
= 21 days + 5 days = 26 days

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