the telephone company purchased 95 yards of wire for $1,235 in September. They plan on making a purchase of 285 yards in October. How would you calculate the cost of the additional portion?
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The telephone company purchased 95 yards of wire for $1,235. Therefore, cost for one yard is $ 1235/95=$13 The additional yards=285-95=190
Cost of additional 190 yards is $ 13 x 190=$ 2470
Thus ,total cost is $1235+$2470, that is, $3705
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