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avatar+27 

Here is another answer that I need reviewed. 

 

Question:

It takes a machine 3 minutes to fill 20 bottles of soda. At this rate how many minutes will it take the machine to fill 48 bottles of soda?

 

My work:

1. (3min/20 sodas)=(m/48 sodas)

2. 20/3=6.66666667

3. 48/6.6666667=7.2 minutes

 

My question is should the answer be 7.2 minutes or should I round it to 7 minutes? The question does not state if it wants the exact answer or a rounded full minute. Thanks in advance everyone.

 Jul 7, 2019
 #1
avatar+6045 
+1

Unless they ask you to round it I would leave it as 7.2 min

 Jul 7, 2019
 #2
avatar+27 
0

Thanks so much for your response.

dreamdriven  Jul 7, 2019
 #3
avatar+1718 
+3

Some people may leave it as a fraction, hence,

48/1//20/3

then, 3*48/20

144/20

36/5

7.2

 

Since a da the previous step is 36/5, and I like fractions, I would leave it as 36/5...

 

-\(tommarvoloriddle\)

.
 Jul 7, 2019
edited by tommarvoloriddle  Jul 7, 2019
edited by tommarvoloriddle  Jul 7, 2019
 #4
avatar
+1

Just because a number is written as a decimal doesn't mean it is rounded.

 

7.2 minutes is not a rounded answer because the answer is exactly 7.2 minutes.

 

Some info on decimals:

https://www.mathsisfun.com/decimal-fraction-percentage.html

 

Some info on rounding:

https://www.mathsisfun.com/definitions/rounding.html

Guest Jul 7, 2019
 #5
avatar+1718 
+3

Thank you I fixed my mistake guest... better?

tommarvoloriddle  Jul 7, 2019
 #6
avatar
0

Yep! smiley

Guest Jul 7, 2019
 #7
avatar+1718 
+2

Thank you so much guest, I didn't see that mistake! I thought dreamdriven rounded because s/he is dividing by 6.66666666666666666666667. I wasn't thinking straight- I was multitasking. Once again, Thank You!

tommarvoloriddle  Jul 7, 2019
 #7
avatar+27 
0

I appreciate everyone's input. Thanks.

dreamdriven Jul 7, 2019
 #9
avatar+1718 
+2

No Problem dreamdriven! Good Luck with future math problems!

tommarvoloriddle  Jul 7, 2019

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