250. A delivery service owns two cars that consume 15 and 30 miles per gallon. Fuel costs 3
per gallon. On any given business day, each car travels a number of miles that is
independent of the other and is normally distributed with mean 25 miles and standard
deviation 3 miles.
Calculate the probability that on any given business day, the total fuel cost to the delivery
service will be less than 7.
(A) 0.13
(B) 0.23
(C) 0.29
(D) 0.38
(E) 0.47
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