1) if 40 sheets of paper cost $2.40 how much would 80 sheets cost
2)if 25 sheets cost $2.00 how much would 80 sheets cost
3)if 15 sheets cost $1.60 how much would 880 sheets cost

1. Cost of 80 sheets of paper = $ 4.8

2. Cost of 80 sheets of paper = $ 6.4

3. Cost of 880 sheets of paper = $ 93.8

Step-by-step explanation:

1) if 40 sheets of paper cost $2.40 how much would 80 sheets cost

Solution:

Price of 40 sheets of paper = $2.40

Price of 1 sheet of paper = 2.40/40

Price of 80 sheets of paper = (2.40/40)*80

                                             = $ 4.8

2)if 25 sheets cost $2.00 how much would 80 sheets cost

Price of 25 sheets of paper = $2.00

Price of 1 sheet of paper = 2.00/25

Price of 80 sheets of paper = (2.00/25)*80

                                             = $ 6.4

3)if 15 sheets cost $1.60 how much would 880 sheets cost

Price of 15 sheets of paper = $1.60

Price of 1 sheet of paper = 1.60/15

Price of 880 sheets of paper = (1.60/15)*880

                                             = $ 93.8

step-by-step explanation:

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