Question 539590
Will sold 225 candy bars.
 He earns $1 for each almond candy bar he sells and $0.75 for each caramel candy bar he sells.
 If he earned a total of $187.50, how many of each type of candy bar did he sell for the fundraiser. 
:
Let a = no. of almond candy bars
Let c = no. of caramel
:
"Will sold 225 candy bars."
a + c = 225
:
"He earns $1 for each almond candy bar he sells and $0.75 for each caramel candy bar he sells. If he earned a total of $187.50,"
1a + .75c = 187.50
:
We can use elimination here, easily
Subtract the above equation from the 1st equation
a +  c = 225
a +.75c = 187.5 
------------------subtraction eliminates a, find c
.25c = 37.5
c = {{{37.5/.25}}}
c = 150 caramel bars
:
Find a using the 1st equation
a + 150 = 225
a = 225 - 150
a = 75 almond bars
:
:
Confirm this in the value equation
1(75) + .75(150) = 
75 + 112.5 = 187.5