Without doing calculations choose the equation that you can NOT use to answer the question. What number is 55% of 80?

Use the percentage formula: Y/X = P% ... You need to multiply the result by 100 to get the percentage. Converting 0.20 to a percent: 0.20 * 100 = 20% So 20% of 60 is 12.

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:

529 and 531

step-by-step explanation: