3 years ago

Each adult ticket has a different price value .

Mathematics

1 answer:

ValentinkaMS [17]3 years ago

4 0

Answer:

Step-by-step explanation:

c+a=20

a=20-c

5.25c+7.75a=140, using a from above makes this

5.25c+7.75(20-c)=140

5.25c+155-7.75c=140

-2.5c+155=140

-2.5c=-15

c=6

a=20-c=20-6=14

So she bought 14 adult and 6 children tickets.

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