IBPS Government Jobs Exams Numerical Ability Averages

The average salary of the entire staff in an office is Rs 3200 per month. The average salary of officers is Rs 6800 and that of non- officers is Rs 2000. If the number of officers is 5, then find the number of non-officers in the office?
A) 8 B) 12 C) 15 D) 5 E) None of these

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IBPS Other Question

A can complete a work in 20 days while B is 25% more efficient than A. B worked for 6 days and left, remaining work is completed by C in 15 days. Find in how many days C can complete the whole work alone?
A) 30 days B) 21 days C) 18 days D) 24 days E) 27 days Eight persons K, L, M, N, O, P, Q and R sitting in a row. Some of them are facing north while some are facing south. N sits fifth to the right of M but none of them sits at an extreme end. Q sits third to the right of N. L sits second to the right of Q. Only one person sit between L and P. R sits third to the left of P. K sits second to the left of O. Both the person sitting at extreme ends faces opposite direction to each other. Both the immediate neighbours of M faces same direction. R sits to the left of L and both of them are facing opposite direction to each other. R does not face north direction. Which among the following pair sit at the end of the row?
A) Q, L B) R, K C) O, P D) L, R E) None of these