Question
The average salary of M, N, and O is Rs. 20000 and the
average salary of P and Q is Rs. 14000. If the savings of M is 65% of the average salary of all five persons, then find the salary of M which is Rs. 13000 more than his savings.Solution
ATQ,
Total salary of all the five persons = 27000 × 3 + 20000 × 2 = Rs. 121000
Average salary of each person = 121000 ÷ 5 = Rs. 24200
Savings of P = 45% of 24200 = Rs. 10890
So, required salary of P = 10890 + 18500 = Rs. 29390
The minimum value of 45 sin2 θ + 28 cos2 θ is

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