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?

Question

anonymous · Answer

(1) Jack-2=2*Jen 
or 
(2) Jack=(2*Jen)+2
(3) Jack+3*Jen=66
substituting (2) into (3)
(4) 2*Jen+2+3*Jen=66
collecting terms
(5) 5*Jen=66-2=64
(6) Jen=64/5=12.8

anonymous · Answer

it;s ok tat u type slow lyam. take ur time as long as u r trying hard! :)

anonymous · Answer

wait, so jen is 12.8 years old? does tat make sense?

anonymous · Answer

I think so, she is about 2 years and 9 months?
Since Jack-2=2*Jen, and Jen=12.8
Jack=2*12.8+2=27.6

anonymous · Answer

lwt me double check my work

anonymous · Answer

ok cuz tat doesnt make much sense to me i think it should be whole numbers...just sayin

anonymous · Answer

Jack+3*Jen=66
27.6+3*12.8=66
so I think it is right

anonymous · Answer

o yeh, ur rite thx! again

anonymous · Answer

:)

anonymous · Answer

:) ur rly smart...a lifesaver

anonymous · Answer

fan me! I like ot help