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Anettt [7]
3 years ago
6

A worker takes a random sample of 200 bolts and finds that 30 of them are either too long or Too Short thus making them unusable

. Estimate the number of unusable bolts and a production of 17,000 bolts.
A. 1,610 Bolts

B. 2,550 Bolts

C. 2,140 Bolts

D. 2,260 Bolts


I got D. I just need to be sure it is the right answer.
Mathematics
1 answer:
Nutka1998 [239]3 years ago
4 0

Answer:

B

Step-by-step explanation:

30 are unusable in 200. So how many are unusable in 17,000??

<em>We can set up a ratio and figure out the answer right away! Let x be the number of unusable bolts in 17,000, so we can write:</em>

<em>\frac{30}{200}=\frac{x}{17,000}\\200x=30*17000\\200x=510,000\\x=\frac{510,000}{200}\\x=2550</em>

<em />

<em>THus, number of unusable bolts is 2550. B is right.</em>

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