The concession stand sells three sodas for every four hot dogs that are sold. If 12 sodas are sold, how many hot dogs are sold?

We now have a system of two linear equations:

d

+

h

=

78

1.25

d

+

1.5

h

=

105.5

We can solve it using several methods, though I'm going to go with substitution. Use the first equation to solve for

d

:

d

+

h

=

78

→

d

=

78

−

h

Now plug this in for

d

in the second equation:

1.25

d

+

1.5

h

=

105.5

→

1.25

(

78

−

h

)

+

1.5

h

=

105.5

Solving for

h

, we have:

97.5

−

1.25

h

+

1.5

h

=

105.5

0.25

h

=

8

h

=

8

.25

→

h

=

32

Since

h

+

d

=

78

,

32

+

d

=

78

→

d

=

46

The concession stand therefore sold

46

hot dogs and

32

hamburgers.

Step-by-step explanation:

That was an explanation for a similar answer, I hope it helps!

22 dimes and 9 nickels

step-by-step explanation: