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## The ratio of A’s to B’s on the last test was 3 to 4. If there was 12 A’s . how maby B’s were there?

Question

The ratio of A’s to B’s on the last test was 3 to 4. If there was 12 A’s . how maby B’s were there?

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Mathematics
3 years
2021-08-24T03:18:59+00:00
2021-08-24T03:18:59+00:00 2 Answers
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## Answers ( )

a – 3

b – 4

3 x ? = 12

? = 4

so

4 x 4 = 16

ANSWER 16

Answer:16 B’s

Step-by-step explanation:If you know there are 3/4 A’s/B’s,

and that there are 12 A’s,

you can set up a proportion:

3 12

— = —

4 x

cross multiplication gets you:

48 = 3x

solve for x.

x = 16