Two kinds of fish can be found in a small tank. The blue fish is two fifthteenths feet long and the orange fish is seven tenths feet long. How much longer is the orange fish?

17/30

Step-by-step explanation:

You have 2/15 and 7/10. You have to find a common denominator. I used 30. Multiply 2/15 by 2/2 and 7/10 by 3/3 to get 4/30 and 21/30. Then solve this equation: 21/30-4/30. The answer is the answer to the problem.

10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6