Q136
P, Q and R are three typists who working simultaneously can type 216 pages in 4 hours. In one hour, R can type as many pages more than Q as Q can type more than P. During a period of five hours, R can type as many pages as P can during seven hours. How many pages does each of them type per hour ?
A.
14, 17, 20
B.
15, 17, 22
C.
15, 18, 21
AnswerD.
16, 18, 22
Answer: Option C
Solution
Answer: Option C
Solution:
Let the number of pages typed in one hour by P, Q and R be x, y and z respectivelyThen,
Solving (i), (ii) and (iii), we get