Question

43. P, Q, and R work together to complete a piece of
work in x days. P and R take 20 days and 30 days,
respectively, to complete the work. Q is faster than
R and slower than P. If x is an integer, then how
many values can it take?​

Answer 1

Answer:

i) Find the work done by P and Q in a period of first 2 days.

(ii) Find the part of the work done by P and Q in a period of 2 days.

(iii) Find the maximum the maximum number of interger periods of fill the tank.

Answer is C