Question

Alison paid $21.75 for a number of packs of rice crackers. 3 packs of rice crackers cost $1.45. how many packs of rice crackers did Alison buy? if she were to buy 60 packs of the same rice crackers , would $30 be enough to pay for them

Answer 1

Find the x, the unit price
3x = 1.45
3x /3 = 1.45 / 3
x = 0.483 cost per pack.

Find x, the number of packs bought
21.75 = 0.483x
0.483x = 21.75
0.483x / 0.483 = 21.75 / 0.483
x = 45 packs bought

Find total cost of 60 packs
x = 0.483(60)
x = 28.98 is the total cost. $30 is more than enough to pay for 60 packs.