15 write both possible

sam's class is trying to raise money for their class field trip to the local water park. the boys are selling hamburgers and chips for $4 each and the girls are selling hot dogs and chips for $2 each. the boys plan to sell 100 hot dogs. they must raise more than $800.

answer:

the number of hot dogs and hamburgers that were sold is  

78

105.5

step-by-step explanation:

the number of hot dogs and hamburgers that were sold is  

78

, so  

d

+

h

=

78

.

if each hot dog is sold for  

1.25

, then the total revenue from hot dogs is given by  

1.25

d

. in the same way, the total revenue from hamburgers is  

1.50

h

. the total revenue from both hot dogs and hamburgers should be the sum of these, and since we are told the total revenue is  

105.50

, we can say  

1.25

d

+

1.5

h

=

105.5

.

read more on -

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you