Today, Richard ate 7 fewer than twice the number of candies his brother Carlos ate
yesterday. If Carlos ate 5 more candies to-
day than he did yesterday, how many can-
dies did Carlos eat today if Richard ate 13
candies today?
A. 7
B. 10
C. 13
D. 15
E. 20

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:

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

2

step-by-step explanation: