Need math help?!?!??!?!!?!?

Question

at a fruit stand, the price of one pound of cherries is twice the price of one pound of grapes. if 32 pounds of cherries and 8pounds of grapes were sold for $90.00, then how much more money was generated by cherry sales than by grape sales?

[a] $75

[b] $70

[c] $65

[d] $60

[e] $55

Answer 1

x=cherries price

y=grapes price

x=2y

32x+8y=90

32(2y)+8y=90

72y=90

y=1.25

x=2(1.25)

x=2.5

32(2.5)-8(1.25)=$70

make it a good day

Answer 2

Let's let x = cherry price

y = grape price

32x + 8y = 90

x = 2y

substitute in for x

64y + 8y = 90

72y = 90

y = 1.25 /lb

x = 2.50 /lb

2.5*32 = $80

8*1.25 = $10

$70 more money by cherry sales