mizu36011
15.10.2019 •
Mathematics
Ellen went to the hardware store and purchased 7 pounds of size 1 screws for $63.96. how much did she pay for 1 pound? ellen said she paid $9.13 per pound. do you agree with her?
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Ответ:
Yes, if you divide the $63.96 by the 7 pounds you get $9.13
Step-by-step explanation:
Ответ:
Set up a proportion:
In a sample of 2:3, you have 5 kids in all.
So the the ratio of boys to kids in a sample of 5 is 2:5.
So set up a proportion:
5x = 70
x = 14
Therefore, there are 14 boys in all.