SOLUTION: it takes a teacher 12 minutes to mark 3 tests . how many minutes will it take for the teacher to mark 36 tests ? a) 48 b) 144 c) 108 d) 36 e) 9

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Question 238052: it takes a teacher 12 minutes to mark 3 tests . how many minutes will it take for the teacher to mark 36 tests ?
a) 48 b) 144 c) 108 d) 36 e) 9

Answer by alicealc(293) About Me  (Show Source):
You can put this solution on YOUR website!
12 minutes --> 3 tests

36 tests --> 36/3 * 12 = 12 * 12 = 144 minutes (b)