Robby is twice as old as Greg If Robby is 46 years old how o

Robby is twice as old as Greg. If Robby is 46 years old, how old is Greg?

A. 15

B. 23

C. 25

D. 27

Solution

let age of Greg be x

Given that Robby is twice as old as Greg

i.e if y is the age of Robby then y=2x

given y=46

so 2x=46

x=46/2=23

Age of Greg is 23 years