At a store, ice cream cones cost $1.80 and sundaes cost $3.30. one day the receipts for a total of 148 cones and sundaes were $360.90. how many cones were sold? how many sundaes?

X= cones; y= sundaes

1.80x + 3.30y = 360.90 (i)

x + y = 148 (ii)

from (ii) y= 148-x

1.80x + 3.30(148-x) = 360.9

1.80x + 488.4 + 3.30x = 360.9

1.5x = 127.5

x  = 85 cones

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

idn

step-by-step explanation: