# i need help urgent help

• Oct 7th 2006, 12:43 PM
sjallim
i need help urgent help
hey im new here i dont know much i just started a quantatative methods classes and i have this assignment that i cant figure out

the sum of two numbers divided by2 is 2o and the difference of the two numbers mulitpy by 3 is 18 find the two numbers

:confused:
i will be greatfull for any help
you can check me out at SJallim@hotmail.com
• Oct 7th 2006, 01:18 PM
CaptainBlack
Quote:

Originally Posted by sjallim
hey im new here i dont know much i just started a quantatative methods classes and i have this assignment that i cant figure out

the sum of two numbers divided by2 is 2o and the difference of the two numbers mulitpy by 3 is 18 find the two numbers

Let the numbers be a and b, then you are told that:

(a+b)/2 = 20,

and that:

3(a-b) = 18

Then the first can be rewritten as:

a + b = 40,

and the second as:

a - b = 6.

Then we have:

(a+b) + (a-b) = 40 + 6,

so:

2a = 46,

hence a=23, and so b=17.

RonL