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kati45 [8]
3 years ago
9

The number of children at the library was 3 times the number adults. The total number of people at the library was 48. How many

children were at the library
A 12

B 24

C 32

D 36
Mathematics
1 answer:
Rufina [12.5K]3 years ago
7 0

Answer:

D 36

Step-by-step explanation:

<em>Write the information algebraically</em>

c = 3a

c + a = 48

c = children, a = adults

<em>In the second sentence (in bold), we can replace c with 3a</em>

c + a = 48 → 3a + a = 48

<em>Simplify</em>

3a + a = 48 → 4a = 48 → a = 12 (divide both sides by 4)

<em>We can then substitute or plug in a = 12 into the original equation:</em>

c + a = 48 → c + 12 = 48 → c = 36 (subtract 12 from both sides)

<h3>There are 36 children</h3>
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