29-10-2019
Mathematics

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your school buys 30 graphing calculators for 1822.50. Write and solve a proportion that gives the cost c of buying 120 calculators.
solve it i will pick brainiest.

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jimrgrant1 jimrgrant1

29-10-2019

Answer:

7290

Step-by-step explanation:

Using proportion then

[tex]\frac{1822.5}{30}[/tex] = [tex]\frac{c}{120}[/tex] ( cross- multiply )

30c = 18700 ( divide both sides by 30 )

c = 7290

The cost of 120 calculators is 7290

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