anonymous
  • anonymous
Christopher is 4 times as old as Michael. Ten years ago, Christopher was 9 times as old as Michael.How old is Christopher now?
Mathematics
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anonymous
  • anonymous
Christopher is 4 times as old as Michael. Ten years ago, Christopher was 9 times as old as Michael.How old is Christopher now?
Mathematics
jamiebookeater
  • jamiebookeater
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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anonymous
  • anonymous
Let the present age of Christopher and Michael be x and y then, x=4y ........i x-10 = 9(y-10) .....ii
anonymous
  • anonymous
Solve that two equations
anonymous
  • anonymous
for x in the second equation do I put 4y? so the equation would look like 4y-10=9(y-10) ?

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anonymous
  • anonymous
Yep....... Now solve for y
anonymous
  • anonymous
okay
anonymous
  • anonymous
Then plug the value of y u get in eqn i to find x
anonymous
  • anonymous
when i was solving the equation with the y i distributed and got 4y-10=9y-90
anonymous
  • anonymous
then after that i added 9y to 4y
anonymous
  • anonymous
and got 13y
anonymous
  • anonymous
4y-10=9y-90 -10+90=9y-4y
anonymous
  • anonymous
got your mistake?
anonymous
  • anonymous
ohhh
anonymous
  • anonymous
yes i did
anonymous
  • anonymous
So, what is the value of y
anonymous
  • anonymous
16?
anonymous
  • anonymous
YES
anonymous
  • anonymous
Now what is the value of x then
anonymous
  • anonymous
64?
anonymous
  • anonymous
Very correct
anonymous
  • anonymous
okay :) thank you
anonymous
  • anonymous
WELCOME

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