8

For every 140 feet that Kelly rides on her bicycle, the wheels turn 20 times. About

how many times do the wheels turn in 5 miles? (1 mile = 5,280 feet)

Answer : The number of times the wheels turn in 5 miles is, 3774

Step-by-step explanation :

First we have to convert 140 feet in to miles.

Conversion used :

1 mile = 5,280 feet

or,

5,280 feet = 1 mile

So, 140 feet = mile

Now we have to calculate the number of times do the wheels turn in 5 miles.

As, the number of times wheel turn in 0.0265 mile = 20 times

So, the number of times wheel turn in 5 mile = times

Therefore, the number of times the wheels turn in 5 miles is, 3774

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.