Question

甲数的五分之三等于乙数的八分之五,两数的差是40,甲数是

Answer 1

甲数 = x 3/5 < 5/8

乙数 = x - 40

(3/5)x = (5/8)(x - 40)

(24/25)x = x - 40

x/25 = 40

x = 1000

y = 960