Rohit, Harsha and Sanjeev are three typists who working simultaneously can type 216 pages in four hour. In one hours Sanjeev can type as many pages more than Harsha as Harsha can type more than Rohit. During a period of five hours Sanjeev can type as many pages as Rohit can during seven hours. How many pages does each of them type per hour?



[ A ]    16,18,22
[ B ]    14,17,20
[ C ]    15,17,22
[ D ]    5,18,21 right
[ E ]    None of these
Answer : Option D
Explanation :
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