Ralph has 28 coins in his bank. of these 5/7 of the coins are quarters. how many quarters does ralph have?

10

20

Step-by-step explanation:

5/7 of 28 is 20

1/7 is 4 so multiply 4 by 5 to get 5/7

4 x 5 = 20

hi!

i believe that john has 55 pieces of candy left.

!

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: