It takes 6 minutes to fill an empty aquarium to a depth of 2/5 meters. What is the unit rate in minutes per meter?

Question

how do you find the unit rate?

Answer 1

Let the units be your guide. They ask for a rate in minutes per meter. All you have to do is plug your given amounts into a fraction with those units in the right place. Look:

 

minutes       <-- form you want (if it doesn't show, this should be underlined like a fraction

meter

 

6 minutes         <--- data you have, as a fraction

2/5 meters

 

You have to do a bit of manipulation with the fraction to get a whole number, but you should get a whole number, and don't forget to include the units!

Answer 2

2/5 m ÷ by 6 minutes is the unit rate (can you do this division?)

On careful reading, I see that you're asked for minutes per meter, so that 6 min divided by 0.4 m, which is 2.5 times 6 min or 15 minutes per meter.