imbolowry2607 imbolowry2607

10-01-2021
Mathematics

contestada

if 9 calculators cost £96.30. How much do 13 calculators cost

Respuesta :

fairytinker92 fairytinker92

10-01-2021

Step-by-step explanation:

First, you want to start by creating an equation to find the unit rate

calculators = c

9c = 96.30

Solve!!!

9c/9 = 96.3/9

c= 10.7

A calculator costs $10.70 (Sorry I will be using the dollar sign instead)

Now you want to set an expression for 13 calculators

13c

Substitute 10.7 in

13(10.7)

Multiply them

$139.10

13 calculators cost $139.10

I hope this helps!!!

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