# To convert micrograms to milligrams I need to: Multiply by 10^3 Multiply by 10^(-3) Divide by 10 Multiply by 10^6 2)Find 'x' to make the ratios proportional: 14:21:35 and 10:x:25 3)If a pharmacist can package 840 pills in 2 hours, how many pills can she package in 47 minutes?

1)To convert micrograms to milligrams I need to:
Multiply by ${10}^{3}$
Multiply by ${10}^{-3}$
Divide by 10
Multiply by ${10}^{6}$
2)Find 'x' to make the ratios proportional: 14:21:35 and 10:x:25
3)If a pharmacist can package 840 pills in 2 hours, how many pills can she package in 47 minutes?
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pararevisarii
1)1 microgram = $\frac{1}{1000}$ milligram$=0.001={10}^{-3}$ milligram
multiply by ${10}^{-3}$ Ans.
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duandaTed05
2) $14:21:35=10:x:25\phantom{\rule{0ex}{0ex}}2:3:5=2:\frac{x}{5}:5\phantom{\rule{0ex}{0ex}}⇒3=\frac{x}{5}\phantom{\rule{0ex}{0ex}}⇒x=3×5=15$
3) 2 hours pharmacist packed = 840 pills
1 mint pharmacist packed =$\frac{840}{120}$ pills
=7 pills
47 mints, he packed = $7×47$ =329 pills