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和訳
問題文 Read each question. Calculate the answer and write the number.
Billy and Joe both live in a town called Happyville. Each drives to Sadvale, a town that is 100 kilometers away. Billy leaves Happyville at 5 p.m. and travels at an average speed of 25 kilometers per hour. Joe leaves at the same time and travels at an average speed of 50 kilometers per hour. However, Joe stopped for dinner for 40 minutes. What is the difference in their time of arrival at Sadvale?
( ) minutes. [名古屋工大]
正解 80
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