DIRECTION for the question:Solve the following question and mark the best possible option.
The values of p, q, r and s are 15, 20, 25 and 30. If s is decreased by 2.5%, r is decreased by 3%, q is decreased by 4% and p is decreased by 2%, then (p + q + r + s) will decrease by approximately
A)
2.35%
B)
2.5%
C)
2.6%
D)
2.8%
E)
2.2%
D
Initial value of p+q+r+s = 90
Final value = 0.98p +0.96q + 0.97r + 0.975s = 14.7 + 19.2 + 24.25 + 29.25 = 87.4
Decrease percentage = 2.6*100/90 = 2.8%
