Posted by Clair on Wednesday, October 21, 2009 at 12:54am.
Jackie goes to the store to buy some meat. The meat costs $5.80/kg. How many grams of meat could she buy for $10?
is there an easy way to do this? I did a few others like it, but kg and grams is not as easy

math  Reiny, Wednesday, October 21, 2009 at 8:24am
The metric system is amazingly easy.
In this case all you have to remember that the prefix kilo means 1000
(e.g. 1 km = 1000 m, 1 kg = 1000 grams)
so for $10 Jackie can buy 10/5.8 kg
= 1.724 kg
= 1742 grams
In the US, a similar question might be
"Jackie goes to the store to buy some meat. The meat costs $3.80 per pound. How many ounces of meat could she buy for $10? "
 a much more complicated question.

math  Clair, Wednesday, October 21, 2009 at 9:56pm
Thank you. Why don't we use just one system, it would make things so easy!
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