Three -fourth petrol of a reservoir is used to fill the petrol tanks of five trucks having the same storage capacity, what part of the total capacity of the petrol reservoir did each truck receive?
A
320
B
415
C
215
D
15
Correct Answer: 320
8^(2x + 1) = 2^(9x + 6) Or, 2^3(2x + 1) = 2^((9x + 6) Or, 6x + 3 = 9x + 6 Or, 3x = - 3 So, x = - 1