Lamar brought 3 cds that were each the same price. including sales tax he paid a total of 40.20 of that total,2.70 was tax. what was the price of each cd before tax?

The price of each CD before tax is $12.50.

Step-by-step explanation:

Given:

Lamar bought 3 CDs that were each the same price, including sales tax he paid a total of 40.20.

Of that total,2.70 was tax.

Now, to find the price of each CD before tax.

So, we reduce the tax from total:

Now, as given the price of each were same:

Therefore, the price of each CD before tax is $12.50.

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:

45

step-by-step explanation:

to find a percentage, add a decimal in front and multiply it by the other number.

.25 times 180= 45