Question

Paul runs 4.8 km every morning. How many feet are in 4.8 km, given that 1 mile = 1.609 km and 1 mile = 5,280 feet?

Answer 1

There are 15 748.0315 feet in 4.8 km.
Hope this helps!

Answer 2

`15.751ft`

Explanation:

This is a conversion of units problem, so first you have 4.8 km and you need to convert it to feet.

First you take the quantity you need to convert:

4.8km

Then you put a factor, in the denominator you put the conversion factor with the same units that the number that you want to convert, that is:

`4.8km*\frac{}{1.609km}`

Then in the numerator you put the second unit that you have, in this case, the problem gives you that 1 mile = 1.609km, so:

`4.8km*(1mile)/(1.609km)`

Then, as the problem says that convert the 4.8km to feet, you put the next factor in the same way:

`4.8km*(1mile)/(1.609km)*(5280feet)/(1mile)`

Finally, you multiply the initial quantity and the numerators and divide by the denominators, and you have:

`4.8km*(1mile)/(1.609km)*(5280feet)/(1mile)=(25344)/(1.609)ft`

`(25344)/(1.609)=15.751ft`