Brad sold candy bars and cookies for a fundraiser at school. Candy bars sold for $3 and cookies sold for $5. He sold a total of 20 items and made $76. How many candy bars did Brad sell?

Question

karatechopper · Answer

20 items? thts a bit less for this question r u sure?

anonymous · Answer

yes im sure:)

karatechopper · Answer

ok...

anonymous · Answer

so do you know how to doit

karatechopper · Answer

not necesssairily...

anonymous · Answer

think I got it

anonymous · Answer

:D 12 candy bars were sold my friend.

anonymous · Answer

SO. check this out. you with me?

anonymous · Answer

3x+5y = 76$ right. and x+y = 20 right
so solving for x in the second equation gets you x = 20-y
put this in the top equation
3(20-y) +5y = 76 
60-3y+5y = 76 
2y = 16
y = 8
3x+5(8) = 76 
3x+40 = 76
3x = 36
x = 12
y = 8

anonymous · Answer

yes that seems to make sense, thanks:) its basic substitution