My Math Forum

My Math Forum (http://mymathforum.com/math-forums.php)
-   Elementary Math (http://mymathforum.com/elementary-math/)
-   -   Ratios (http://mymathforum.com/elementary-math/29550-ratios.html)

linhbui August 22nd, 2012 02:33 AM

Ratios
 
In a concert, the ratio of the numbers of adults to the number of children is 3:4. If 60 more adults join in the concert, the number of adults will be twice the number of children. How many children are in the concert?

thank you :)

Denis August 22nd, 2012 04:58 AM

Re: Ratios
 
Quote:

Originally Posted by linhbui
In a concert, the ratio of the numbers of adults to the number of children is 3:4. If 60 more adults join in the concert, the number of adults will be twice the number of children. How many children are in the concert?

a = 3c / 4
a + 60 = 2c

Solve for c

NOTE: if you ask us to do ALL YOUR work and you simply submit the answer(s) we give you, without
taking time to understand....then there's a good job as Burger Flipper at BurgerKing waiting foy you :idea:

linhbui August 22nd, 2012 05:53 AM

Re: Ratios
 
Quote:

Originally Posted by Denis
Quote:

Originally Posted by linhbui
In a concert, the ratio of the numbers of adults to the number of children is 3:4. If 60 more adults join in the concert, the number of adults will be twice the number of children. How many children are in the concert?

a = 3c / 4
a + 60 = 2c

Solve for c

NOTE: if you ask us to do ALL YOUR work and you simply submit the answer(s) we give you, without
taking time to understand....then there's a good job as Burger Flipper at BurgerKing waiting foy you :idea:


im only 8 -.-'

mathbalarka August 22nd, 2012 06:13 AM

Re: Ratios
 
Just as Denis posted (he used a = adult and c = children) :





Can you substitute (2) in (1) now?

Balarka

.

linhbui August 22nd, 2012 06:24 AM

Re: Ratios
 
Quote:

Originally Posted by mathbalarka
Just as Denis posted (he used a = adult and c = children) :





Can you substitute (2) in (1) now?

Balarka

.


thanx :3


All times are GMT -8. The time now is 11:24 AM.

Copyright © 2019 My Math Forum. All rights reserved.