Question

keiko fills an aquarium to a depth of 3/5 meters in 7½ minutes. what is the unit ratr in minutes per meter?​

Answer 1

15 min

Explanation:

2/5 divided by 6

=2/5 * 1/6

=2/30

=1/15

15 min

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.