Question

A store allows customers to fill their own bags of candy, terri decides she only wants jelly beans and chocolate drops. jelly beans sell for $0.98 per pound, and chocolate drops sell for $0.67 per pound. terri's bag weighs 2.1 pounds and it costs 1$5.6 if p is the number of pounds of jelly beans terri purchase, what expression could be used to represent the number of pounds of chocolate drops she purchases?
a. 2.1-9
b. 2.1p
c. p 2.1
d.9-2.1

Answer 1

Jelly beans - $0.98 per pound
chocolate drops - $0.67 per pounds
terri's bag = 2.1 pounds and $1.56

p = represents the pounds jelly beans.
c = represents the pounds in chocolate drops

p + c  = 2.1
0.98p + 0.67c = 1.56

c = 2.1 - p  ; number of pounds of chocolate drops

0.98p + 0.67(2.1 - p) = 1.56
0.98p + 1.41 - 0.67p = 1.56
0.98p - 0.67p = 1.56 - 1.41
0.31p = 0.15
p = 0.15/0.31
p = 0.48 pounds of jelly beans

c = 2.1 - 0.48
c = 1.62 pounds of chocolate drops.