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

Let the age of Jen 2 years later be x,

age of jack two years later = 2x

total age of jack and jen now = 2x + x - 2 - 2

= 3x - 4

3x - 4 = 66

3x = 70

x = 70/3

= 23.3 (to three significant figures)

age of jen now = x - 2

= 23.3 - 2

= 21.3

Jen is 21.3 years old now.