SOLUTION: will is twice as old as jill, three years ago, jill`s age was two fifths of will`s age then.how old is each now?
Algebra.Com
Question 342792: will is twice as old as jill, three years ago, jill`s age was two fifths of will`s age then.how old is each now?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
j = Jill' present age
w = Will's present age
:
Write an equation for each statement:
:
"will is twice as old as jill,"
w = 2j
:
"three years ago, jill`s age was two fifths of will`s age then."
j - 3 = (w - 3)
We can use the decimal here
j - 3 = .4(w - 3)
:
j - 3 = .4w - 1.2
:
j = .4w - 1.2 + 3
:
j = .4w + 1.8
Replace w with (2J)
j = .4(2j) + 1.8
:
j = .8j + 1.8
:
j - .8j = 1.8
:
.2j = 1.8
j =
j = 9 yrs is Jill's present age
then
w = 2(9)
w = 18 yrs is Will's present age
:
:
see if that is true in the statement:
"three years ago, jill`s age was two fifths of will`s age then."
9 - 3 = (18 - 3)
6 = (15)
6 = 6
RELATED QUESTIONS
Mary is presently twice as old as Maggy. Ten years ago, Maggy's age was one-third of... (answered by stanbon)
Mary is presently twice as old as Maggy. Ten years ago, Maggy's age was one-third of... (answered by mananth)
john is twice jane’s age. in 2 year’s time, john will be twice as old as jill and she... (answered by josmiceli)
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. If 4 years ago Jack’s age was thrice as Jill’s. Find their... (answered by josmiceli)
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 2 years, Jack will be 4 times as old as Jill was 9 years (answered by ramkikk66)