A student travels from his house to school at 10 km/hr and reaches school 1 hour late. The next day he travels 12 km/hr and reaches school 1 hour early. What is the distance between his house and the school?	Choose the correct answer: A) 100 B) 105 C) 110 D) 115 E) 120
Let x be the distance from his house to the school.   x/10 = x/12 + 2   6x = 5x + 120   x = 120 km   The answer is 120.
<result>E</result>
A student travels from his house to school at 10 km/hr and reaches school 1 hour late. The next day he travels 12 km/hr and reaches school 1 hour early. What is the distance between his house and the school?