Question
The average monthly salary of a group is ₹52,000. A
new member joins earning ₹70,000, increasing the average by ₹1,000. Find the total salary of the group before the new member joined.Solution
Let number of members before joining = 'P'.
Salary before = 52,000P
(52000P + 70000) / (P + 1) = 53000
=> 52000P + 70000 = 53000P + 53000
=> P = 17
Total salary = 52000 × 17 = ₹884,000
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