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AnnZ [28]
3 years ago
8

For every set of fifteen batteries, two are said to be defective. Out of ninety batteries, how many are not defective?

Mathematics
1 answer:
Nuetrik [128]3 years ago
7 0
ANSWER
12 batteries would be defected.
STEP BY STEP.
the ratio is
15:2
For every 15 batteries, 2 are defective
So in order to get from 15 batteries to 90 you multiply
15x6 so
you’d have to multiply 2 as well
2x6
Which in total gives you 12. Defected batteries.
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