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SSSSS [86.1K]
3 years ago
6

At a supermarket the price of a carton of blueberries varies directly with its weight. A carton that weighs 0.5 lb cost $4.25. W

hat is the price in dollars of a carton of blueberries that weighs 0.75 lb?
Mathematics
2 answers:
klemol [59]3 years ago
7 0

Given that the price of a carton of blueberries varies directly with its weight.

That is,

p=kw,k>0, where p is the price , w weight of the carton and k a proportionality constant.

Consider 2 prices and weights,

\frac{p_1}{p_2} =\frac{w_1}{w_2} \\ p_1 =\frac{w_1}{w_2} p_2\\ p_1 =\frac{0.75}{0.5} *4.25\\ p_1=6.375

The price in dollars of a carton of blueberries that weighs 0.75 lb is \$6.375.


IRISSAK [1]3 years ago
6 0
It is $6.375.
0.5lb:$4.25
0.75lb:$6.375
This is because 0.75lb is 1.5 times greater than 0.5, so you do 4.25*1.5, which is $6.375
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