5hrs plus 8-10 minutes
4.72 hours......
5 hours and near about 10 minutes .!!
In 1 hour,
Faucets (A+B+C+D) together can fill { 1/48 + 1/72 + 1/96 + 1/6 }th part of swimming pool
=61/288 th part of swimming pool
Therefore, 1 pool can filled in {288/61 * 1 } hours
= 4.72131147541 hours
= 4hrs 43mins 17seconds
CAclubindia
