Question

the cost of 250 ft of cable is 2950 what would 40 ft cost

Answer 1

Use ratio and proportion:  

$29.50 is to 250 ft. as how much is to 40 ft.  

29.5 / 250 = x / 40  

x = 40(29.5) / 250  

x = 1180 / 250  

x = 4.72  

40 ft. would cost $4.72

Answer 2

Based on the cost of 250 ft of cable, we can calculate that the cost of 40 ft of cable would be $472

First find the cost of per feet of the cable:

= Cost of cable / Number of feet

= 2,950 / 250

= $11.80 per feet

The cost of 40 ft would therefore be;

= Number of feet x Cost per feet

= 40 x 11.8

= $472

In conclusion, the cost would be $472

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