Your 2500 gallon pool has sprung a leak and loses 70% of its water every 10 minutes. How much water will remain in the pool after 30 minutes?

2432.5  gallons

Step-by-step explanation:

Given that the pool loses 70% of it's water every ten minutes, it means that in 30 minutes, 70% of the volume of water present would have been lost. Mathematically, in the first 10 minutes, the water lost

= 70% * 2500 gallon

= 1750 gallons

Volume of water left

= 2500 - 1750

= 750 gallons

After another 10 minutes (20 minutes in total), the water lost

= 70% * 750

= 525 gallons

Volume of water left

= 750 - 525

= 225 gallons

After another 10 minutes (30 minutes in total), the water lost

= 70% * 225

= 157.5 gallons

Volume of water left

= 225 - 157.5

= 67.5 gallons

Total volume of water lost after 30 minutes

= 2500 - 67.5

= 2432.5  gallons

Total water remaining after 30 minutes is 67.5

Step-by-step explanation:

Total gallon pool= 2500

If 70% of water is lost every 10 minutes, how much water will remain after 30 minutes.

First 10 minutes

70% of 2500

= 70/100 * 2500

=0.7*2500

= 1750

Total remaining after first 10 minutes = 2500-1750

=750

Second 10 minutes (20 minutes)

70% of 750

70/100 * 750

0.7 * 750

525

Total remaining after the second 10 minutes (20 minutes)

750-525

225

Third 10 minutes (30 minutes)

70% of 225

70/100 * 225

0.7 * 225

157.5

Total remaining after the third 10 minutes ( 30 minutes)

225-157.5

=67.5

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

step-by-step explanation:

f