Jamie's friend Bob is having a party, but Jamie forgot and went to dinner with her friend Emily instead. Bob's party starts in half an hour. Bob lives 30 km away from Jamie, and the restaurant Jamie and Emily are at is three times as far away from Bob's house as Jamie's house is.\nHow fast would Jamie have to drive in order to get to Bob's party on time?\nOptions:\n(A) 30 km/h\n(B) 45 km/h\n(C) 60 km/h\n(D) 75 km/h\n(E) 90 km/h Hmmm, my stream of consciousness:
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Distance between Bob's house and Jamie's restaurant: 30 x 3 = 90 km\nRate of speed to get to Bob's house in an hour: 90 x 1 = 90 km/h\nRate of speed to get to Bob's house in half an hour: 90/2 = 45 km/h So, the answer is (B).
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