Question

A bath tub can be filled by the cold water pipe in 15 minutes and by the hot water pipe in 30 minutes. A person
leaves the bathroom after turning on both pipes simultaneously and retums at the moment when the bath tub should
be full. Finding, however, that the waste pipe was left opened, he now closes it. in 5 minutes more the bath tub is full
In what time would the waste pipe empty it?

Answer 1

Step-by-step explanation:

he has answered very well and correct

Answer 2

Answer: 10 minutes

Step-by-step explanation:

Given:

Time taken by cold water pipe = 15 minutes

Time taken by hot water pipe = 30 minutes

Bath tub full in 5 more minutes

To find: Time in which waste pipe would empty it

Solution:

Bathtub should be full in minutes = (15 * 30)/ 15 + 30 = 450/45 = 10 minutes.

The tub is half full in 5 minutes

In 10 minutes, the tub is half empty

so, the waste pipe empties the tub in 5+5 minutes = 10 minutes

Hence, the answer is 10 mins.

#SPJ 2