John left home and drove at the rate of 45 mph for 2 hours. He stopped for lunch then drove for another 3 hours at the rate of 50 mph to reach his destination. How many miles did John drive?  Answers:
A) 235 miles .
B) 245 miles .
C) 240 miles .
D) 265 miles .
E) 275 miles .

Rationale: the total distance d traveled by john is given by d = 45 * 2 + 3 * 50 = 240 miles . answer c
Answer: C