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There are 25 workers in a group. Each can do 1 unit/day. They stary a job of 330 units . After each day, a worker of the same efficieny as each worker in the group joins the group. The job was completed in x . Find x
A. 9
B. 10
C. 1
D. 12

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Correct Answer - C
(i) On the first day 25 unis of work is done. On the second day 26 units, third day 27 units the work id done in this way
(ii) Let `25+26+27+................` upto x terms =330
(iii) Find x.

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