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.

dreamdriven Jul 7, 2019

#3**0 **

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...

-\(tommarvoloriddle\)

.tommarvoloriddle Jul 7, 2019

#4**+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:

Guest Jul 7, 2019

#7**0 **

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