Question

A candy store sells malted milk balls for $2.50 per pound, and chocolate-covered raisins for $3.75 per pound. How many pounds of each should be used to make a 10 pound mixture that sells for $3.00 per pound?

Answer 1

m + r = 10
2.5m+3.75r=10(3)
2.5(10-r)+3.75r=30
1.25r+25=30
1.25r=5
r=4
m=6