The task is to generate the correct answer for a given math problem.

Q: Problem: every year an amount increases by 1 / 8 th of itself . how much will it be after two years if its present value is rs . 70400 ?

A: 89100
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Q: Problem: a statue is being carved by a sculptor . the original piece of marble weighed 250 kg . in the first week 30 percent is cut away . in the second week 20 percent of the remainder is cut away . in the third week the statue is completed when 25 percent of the remainder is cut away . what is the weight of the final statue ?

A: 105 kg
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Q: Problem: two trains leave a station traveling the same direction . train a leaves the station traveling at a constant speed of 60 mph , and train b leaves the station traveling at a constant speed of 80 mph . if both trains maintain constant speeds , in how many minutes will train b overtake train a if train a left 40 minutes prior to train b ?

A:
120
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