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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?
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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?
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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