This morning, sam walked 4 kilometers in 50 minutes. at what rate did sam walk?
use the formula r= d/t , where r is the rate , d is the distance, and t is the time.

a. 0.08 kilometers per minute
b. 12.5 kilometers per minute
c. 46 kilometers per minute
d. 200 kilometers per minute

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)