Question

25/4%of 1hour 20 minutes

Answer 1

25/4/100*80 min=

1/4*1/4*80=

1/16*80=5 min

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Answer 2

5 minutes is the answer.
Explanation:
1 hr 20 minutes = 80 minutes
1% of 80 minutes = 80 /100 minute
25/4% of 80 minutes = ( 80/100) ( 25 /4)
=(4/5)(25/4)
=100/20
=5 minutes