The ratio of number a to number B is 2:5, and the ratio of number B to number C is 4:7 fast

The ratio of number a to number B is 2:5, and the ratio of number B to number C is 4:7 fast

Let B be y, C be Z, then 16: y = 2:5, y = 40, Y: z = 4:7, z = 70, then sum = 16 + 40 + 70 = 126