instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: a and b can do a work in 5 days and 10 days respectively . a starts the work and b joins him after 2 days . in how many days can they complete the remaining work ?
answer:
2


question:
Problem: the smallest value of n , for which n + 2 is not a prime number , is
answer:
2,4


question:
Problem: by selling an article at rs . 600 , a shopkeeper makes a profit of 25 % . at what price should he sell the article so as to make a loss of 25 % ?
answer:

s . 360