Correct Answer - Option 2 : 720
Given:
Time taken to fill 2 buckets = 15 sec
Total Time = one and a half hour = 3/2 hours ,
Seconds = (60 × 60 × 3)/2 = 5400 sec
Buckets filled by one tap in 15 sec = 2
Formula used:
(M1 × T1)/Work1 = (M2 × T2)/Work2
Calculation:
15/2 = 5400/buckets
buckets = (5400 × 2)/15 = 720
∴ 720 buckets will be filled in one and a half hour