Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
sws._.
Group Title
Christopher is 4 times as old as Michael. Ten years ago, Christopher was 9 times as old as Michael.How old is Christopher now?
 one year ago
 one year ago
sws._. Group Title
Christopher is 4 times as old as Michael. Ten years ago, Christopher was 9 times as old as Michael.How old is Christopher now?
 one year ago
 one year ago

This Question is Closed

sauravshakya Group TitleBest ResponseYou've already chosen the best response.2
Let the present age of Christopher and Michael be x and y then, x=4y ........i x10 = 9(y10) .....ii
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.2
Solve that two equations
 one year ago

sws._. Group TitleBest ResponseYou've already chosen the best response.1
for x in the second equation do I put 4y? so the equation would look like 4y10=9(y10) ?
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.2
Yep....... Now solve for y
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.2
Then plug the value of y u get in eqn i to find x
 one year ago

sws._. Group TitleBest ResponseYou've already chosen the best response.1
when i was solving the equation with the y i distributed and got 4y10=9y90
 one year ago

sws._. Group TitleBest ResponseYou've already chosen the best response.1
then after that i added 9y to 4y
 one year ago

sws._. Group TitleBest ResponseYou've already chosen the best response.1
and got 13y
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.2
4y10=9y90 10+90=9y4y
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.2
got your mistake?
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.2
So, what is the value of y
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.2
Now what is the value of x then
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.2
Very correct
 one year ago

sws._. Group TitleBest ResponseYou've already chosen the best response.1
okay :) thank you
 one year ago

sauravshakya Group TitleBest ResponseYou've already chosen the best response.2
WELCOME
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.