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there is 4/5 lb of sand in science supplies. if one scoop of sand weighs 1/20 of a lb how many scoops of sand can maria get from the class supplies?

Sagot :

We want to divide whole sand into scoops, so we have to divide 4/5 by 1/20. Lets do this

[tex] \frac{ \frac{4}{5} }{ \frac{1}{20} } [/tex]
We know that if we want to divide 2 fraction we can multiply first by inverse of second fraction instead of dividing.,so:
[tex] \frac{ \frac{4}{5} }{ \frac{1}{20} } [/tex]
[tex] \frac{4}{5}* \frac{20}{1}= \frac{4*20}{5*1} = \frac{80}{5}= 16[/tex] scoops - its our result.
Beifong

Answer:

6, because 4/5 = 8/10 - 5/10 = 3/10 x 2 = 6/20 divided by 1/20 = 6 scoops

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