Respuesta :

Answer:

pretzels = 10

drinks = 6

Step-by-step explanation:

Let d =  number of drinks

p =  number of pretzels

4d+ 4.75p = 71.50

d+p = 16

Solving this for d

d = 16-p

Substituting this into the first equation

4(16-p)+ 4.75p = 71.50

Distribute

64 - 4p +4.75p = 71.50

Combine like terms

64 +.75p = 71.50

Subtract 64 from each side

64 -64 +.75p = 71.50-64

.75p = 7.5

Divide each side by .75

.75p/.75 = 7.5/.75

p =10

Now we can find the number of drinks

d = 16-p

  16-10

  6

Answer:

6 ; 10

Step-by-step explanation:

P + D = 16

D = 16 - P

4D + 4.75P = 71.5

4(16 - P) + 4.75P = 71.5

0.75P = 7.5

P = 10

D = 16 - 10 = 6

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