Arum takes 12 minutes to solve a set of 75 subtraction problems at a constant rate. How much time did he take to solve 50 subtraction problems?
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Answer:
8
Step-by-step explanation:
75 to 50 =75-(1/3 of 75)
so
12 to ? =12-(1/3 of 12)
1/3 of 12 =4
12-4=8
so 8 is the answer
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