This christmas, your brother jack will be 2 years from being twice as old as your sister jen. the sum of jacks age and three times jen's age is 66. how old is jen?

Age of Jen is 13.6 years old

Solution:

Let "x" be the age of Jack and "y" be the age of Jen

Given that This Christmas, your brother Jack will be 2 years from being twice as old as your sister Jen

The above sentence can be written mathematically as:

Jack age + 2 = twice of age of Jen

The sum of Jacks age and three times Jen's age is 66

Jack age + three times Jen age = 66

x + 3y = 66 ---- eqn 2

Substitute eqn 1 in eqn 2

2y - 2 + 3y = 66

5y - 2 = 66

5y = 68

Thus age of Jen is 13.6 years old

i dont know

step-by-step explanation:

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation: