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

Problem: a , b and c rents a pasture for rs . 730 . a put in 12 horses for 8 months , b 16 horses for 9 months and 18 horses for 6 months . how much should c pay ?
22

Problem: the population of a bacteria culture doubles every 2 minutes . approximately how many minutes will it take for the population to grow from 1,000 to 300,000 bacteria
16

Problem: a present value of a machine is $ 800 . its value depletion rate is 10 % per annum then find the machine value after 2 years ?

$ 64