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2 years ago

HELP ASAP NEED THE ANSWER LIKE RIGHT NOW 100 POINTS AND WILL GIVE BRAINLIEST

Mathematics

2 answers:

Cloud [144]2 years ago

6 0

Answer:

a + c = 30

8a + c = 100

a=10, c= 20

Step-by-step explanation:

cost = 8a + 1c since it is 8 dollars for adult and 1 for child where a is the number of adults and c is the number of children

a+c = 30 since we know that 30 adults and children went

100 = 8a + 1c and it cost 100 dollars

Let c =30 -a

100 = 8a + (30-a)

100 = 7a +30

Subtract 30 from each side

70 = 7a

Divide by 7

10 =a

Then a+c = 30

10+c = 30

c = 30-10

c = 20

Serhud [2]2 years ago

4 0

Answer:

eqn1 : a +c=30

eqn2: 8a+c=100

20 children and 10 adults

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