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3.5 kg of Grade A coffee powder is mixed with 5.25 kg of Grade B coffee powder. The mixture is then packed into packets of 30g each. (a)how many 30-g packets are there? (b)how many grams of mixture are left over?

 Oct 9, 2015

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 #1
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3.5 kg of Grade A coffee powder is mixed with 5.25 kg of Grade B coffee powder. The mixture is then packed into packets of 30g each. (a)how many 30-g packets are there? (b)how many grams of mixture are left over?

 

\(A=3.5\ kg \qquad B=5.25\ kg\\ A+B= 3.5\ kg + 5.25\ kg \\ A+B = 8.75\ kg\)

 

(a) \(\frac{8.75\ kg}{0.030\ kg} \qquad |\qquad 30\ g = 0.030\ kg\\ = 291.6\overline{6}~ \text{ packets}\)

 

There are 291 30-g packets

 

(b)  \(0.6\overline{6}*0.030\ kg = 0.02\ kg = 20\ g\)

20 g of mixture are left over.

 

laugh

 Oct 9, 2015
 #1
avatar+26400 
+30
Best Answer

3.5 kg of Grade A coffee powder is mixed with 5.25 kg of Grade B coffee powder. The mixture is then packed into packets of 30g each. (a)how many 30-g packets are there? (b)how many grams of mixture are left over?

 

\(A=3.5\ kg \qquad B=5.25\ kg\\ A+B= 3.5\ kg + 5.25\ kg \\ A+B = 8.75\ kg\)

 

(a) \(\frac{8.75\ kg}{0.030\ kg} \qquad |\qquad 30\ g = 0.030\ kg\\ = 291.6\overline{6}~ \text{ packets}\)

 

There are 291 30-g packets

 

(b)  \(0.6\overline{6}*0.030\ kg = 0.02\ kg = 20\ g\)

20 g of mixture are left over.

 

laugh

heureka Oct 9, 2015

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