instruction:
Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.
question:
Problem: the mean proportional between 4 and 16 is ?
Options: a. 12, b. 13, c. 14, d. 15, e. 16
answer:
e


question:
Problem: j is faster than p. j and p each walk 24 km. sum ofthe speeds of j and p is 7 kmph. sum of time taken by them is 14 hours. then j speed is equal to ?
Options: a. 4, b. 5, c. 6, d. 7, e. 8
answer:
a


question:
Problem: 2 pipes can separately fill a tank in 20 hrs and 30 hrs respectively. both the pipes are opened to fillthe tank, a leak develops in the tank through which one - third of water supplied by both the pipes goes out. what is the total time taken to fill the tank ?
Options: a. 10 hrs, b. 12 hrs, c. 16 hrs, d. 18 hrs, e. 20 hrs
answer:

c