The total weight of the fish in a tank of tropical fish at Fish’n’fur was 7/8 Ib. Each fish weighed 1/64 Ib. After Eric bought some fish, the total weight of the fish remaining in the tank was 1/2 Ib. How many fish did Eric buy?

Step-by-step explanation:

Weight of fish Eric bought

= Weight of fish at first - Weight remaining

= 7/8 lb - 1/2 lb = 3/8 lb.

Number of fish Eric bought

= (3/8 lb) / (1/64 lb)

= (24/64 lb) / (1/64 lb)

= 24.

Hence Eric bought 24 fishes.

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

b.

step-by-step explanation: