(125)1.5 x (25)7.5 = 5?
A. 8.5
B. 13
C. 16
D. 17.5
Answer:B
(125)1.5 x (25)7.5 = 5?
A. 8.5 B. 13 C. 16 D. 17.5
Explanation: Let (25)7.5 x (5)2.5 (125)1.5 = 5x be the answer.As a result, (52)7.5 x (5)2.5/(53)1.5 = 5x.5x = 5(2 x 7.5) x 52.5/5(3 x 1.5),5x = 515 x 52.5/54.5,5(15 + 2.5 - 4.5) = 5x,513 = 5x,x equals 13.