SOLUTION: Jack is twice as old as Jill but in five years time he will only be one and half times as old. How old is Jack and Jill now?
Algebra.Com
Question 303143: Jack is twice as old as Jill but in five years time he will only be one and half times as old. How old is Jack and Jill now?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Jack is twice as old as Jill
Ja = 2Ji
:
but in five years time he will only be one and half times as old.
Ja + 5 = 1.5(Ji+5)
Ja + 5 = 1.5Ji + 7.5
Ja = 1.5Ji + 7.5 - 5
Ja = 1.5Ji + 2.5
Replace Ja with 2Ji
2Ji = 1.5Ji + 2.5
2Ji - 1.5Ji = 2.5
.5Ji = 2.5
Mult both sides by 2
Ji = 5
:
I'll let you find Ja's age
RELATED QUESTIONS
Jack is twice as old as Jill, but in five years time he will only be one and a half times (answered by MathLover1,MathTherapy)
Today Jack is twice as old as Jill. In ten years’ time Jack will be one and a half times... (answered by josgarithmetic)
Today jack is twice as old as Jill In ten years time jack will be one and a half times as (answered by stanbon)
Today is Jack’s birthday and Jill’s birthday. Jack is five and Jill is nine.
How many... (answered by josgarithmetic)
Jack is twice as old as Jill. In 2 years, Jack will be 4 times as old as Jill was 9 years (answered by TakeATuition.com)
Jack is twice as old as Jill. In 2 years, Jack will be 4 times as old as Jill was 9... (answered by ankor@dixie-net.com)
jack is twice as old as jill. in two years, jack will be 4 times as old as jill was 9... (answered by rwm)
Jack is twice as old as Jill. In 2 years, Jack will be 4 times as old as Jill was 9 years (answered by ramkikk66)
Jack is twice as old as Jill was, when Jack was as old as Jill is now. Together Jack and... (answered by drj)