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SVETLANKA909090 [29]
3 years ago
11

Marco wants to set up 12 small turbines with 3 blades each.If 4 wind turbines blades cost $79.64,how much will all the blade cos

t?
Mathematics
2 answers:
g100num [7]3 years ago
6 0
Okay. So, there will be 12 small turbines, with 3 blades on each of them. 12 * 3 is 36. Marco will need 36 wind turbine blades total. 4 of them cost $79.64. 36/4 = 9. We would multiply 79.64 by 9 to get the cost for all blades. 79.64 * 9 is 716.76. The total cost for 36 blades would be $716.76.
Galina-37 [17]3 years ago
5 0
Hello!


If Marcos has 12 turbines with 3 blades / turbine, then 36 blades. If 4 blades cost $ 79.64, then how much do the 36 blades cost?

Let's make a simple three rule:

Blade ___ price

4 ----------- 79.64
36 --------- y


4 * y = 36 * 79.64
4y = 2,867.04
y =  \frac{2,867.04}{4}

y = 716.76

The 36 blades cost $ 716.76
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