Tyrone is converting 40/50 to a percent. Which method should he use to find the percent?

a) Divide the numerator and denominator of the fraction by 2.

b) Subtract 40 from the numerator and denominator of the fraction.

c) Multiply the numerator and the denominator of the fraction by 2.

d) Add 50 to the numerator and denominator of the fraction.

C

Step-by-step explanation:

The denominator sets the standard adn now that standard has to be compared to 100%.

Since the relationship between 50% and 100% is 2(double), then we multiply both numerator and denominator by 2 to have the new figures

= 80/100 = 80%

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: