Fraction word problems

Two types of fish can be found in a small tank that is 5 1/7 feet long. A blue fish is 2/15 feet long and an orange fish is 7/10 feet long. How much longer is the orange fish?

A baby rabbit was born 3/4 of a month early. When it was born, its weight was 7/8 kilogram. The weight at birth was 9/10 kilogram less than the average weight of a newborn rabbit. What is the average weight of a newborn rabbit?

In the zoo, 3/8 of the staff are male. 7/12 of the staff works part time at the zoo. What is the fraction of the staff that is female?

The lions in the zoo are fed three times a day. During the morning feeding, 2/15 tons of meat is fed. During the afternoon feeding, the weight of meat will be 1/15 ton more than the meat fed during the morning. If the total weight of meat in a day is ½ ton, how much is fed during the feeding at night.

The monkey nursery is open two times a day: ⅔ hours at noon and 5/12 hours in the afternoon. How much time is the monkey nursery open every day?

An octopus weighed 5/6 kilogram. After two weeks, its weight was increased by 3/10 kilogram. But afterwards, it lost 1/5 kilogram in weight as it was sick. What was its current weight?