Mathematics, English, and Lifeskills books were distributed to 50 students in a class. 22 had mathematics books, 21 had English books and 25 had Lifeskills books. 7 had mathematics and English books, 6 had mathematics and Lifeskills books, and 9 had English and Lifeskills books.

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:

y=sec x is the correct answer

~batmans wife dun dun

answer is  

a.

p = 78

step-by-step explanation: