Gretchen worked in the ticket booth for 20 minutes. Kevin worked in the ticket booth 5 times longer than Gretchen.
Which equation could be used to calculate the number of minutes that Kevin worked?
Let the variable b stand for the number of minutes Kevin worked.
A. 20 = b +5
B. 20 = b x 5
C.b = 20 divided by 5
D. b=5 x 20