Question

Which number will replace the question mark in 2 : 8 : : 5 : ?

Answer 1

Answer:

2:8::5:x

2×x=8×5

2x=40

x=20

Answer 2

Answer:

2:8::5:?

Step-by-step explanation:

let be x

product of extreme s and product of means

2x=5×8

2x=40

x=40/2

x=20