1.

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, 18, 21
C. 15, 17, 22
D. 16, 18, 22
Answer» C. 15, 17, 22


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