Jerry is presently twice as old as his brother and six years older than his sister. How many years from now will Jerry’s age be 2/3 of the combined ages of his brother and sister at that time?

Guest Nov 4, 2019

#1**0 **

Jerry's age = x

Brother's age = 1/2x

Sister's age = x -6

y = number of years

x+y = 2/3 (1/2x +y + x-6 +y)

x+y = x + 4/3 y -4

y = 4/3 y - 4

-1/3 y = -4

y = 12 years from now

ElectricPavlov Nov 4, 2019