Could you please show the question so I can try to answer it
Ok so if 1200 total pens and 60 were taken that's a ratio of 1200/60=20
out of 60pens 4 didn't work, again ratio is 4/60=1/15 so about 1/15 of the pens didn't work.
so we have 1200pens * 1/15broken ratio = 80 pens or we can say
20*4=80pens won't work from 20 groups of 60 and 4 out of 60 not working is 20*4=80 not working from total batch of 1200.
hope this helps you some! thank you!!!!!!!!!
The correct answer is 6*10^-6 ..........................
Answer:
Please Attach The Pic so someone can answer.....
Step-by-step explanation:
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Solve the equation:

Reduce the fractions at the left side so that they have the same denominator:

Numerators must be equal:

I hope this helps. =)
Tags: <em>rational equation fraction solution algebra</em>