Question

An Olympic sized pool, which holds 600,000 gallons of water, is only 63% full. The pool maintenance company adds more water, filling the pool until its 90% full. How many gallons did they add?

Answer 1

162000.

Explanation:

63% of 600,000 is 378000

90% of 600,000 is 540000

When you subtract 378,000 from 540,000 you'll get your answer

540,000-378,000= 162000

That means they added 162000 gallons.