Posted by kari on .
in a GIVEN DAY THE MILL TURNS OUT THREE TIMES AS MANY UNITS OF PLYWOOD. IT PROFITS OF $25 ON A UNIT OF LUMBER AND $40 ON A UNIT OF PLYWOOD. HOW MANY OF EACH M UST SELL TO MAKE PROFIT OF $14720 can anyone help im so confused

urgent math 
Reiny,
read your first sentence, it is incomplete and makes no sense.
Please retype your question, and please don't use allcaps. 
urgent math 
kari,
a normal working day the mill makes 3 times as many units of plywood as they do lumber.profit of lumber is $25 profit of plywood is $40 how many of each must be sold to obtain a profit of $14790

urgent math 
Reiny,
let the number of lumber units be x
then the number of plywood units is 3x
then 25x + 40(3x) = 14790
solve for x 
urgent math 
kari,
so... i just pick any number

urgent math 
Reiny,
no, you solve the equation
( why would you think to just pick any number ??)
25x + 40(3x) = 14790
25x + 120x = 14790
145x = 14790
divide by 145
x = 102
so they should make 102 units of lumber
and 3(102) or 306 units of plywood.
check 102(25) + 306(40) = 14790