A phone sells for $245. It is now on sale for 1/5 of the original price. April has a coupon for an extra 10% off sale price. How much less than the original price will April pay for the phone.

April will pay $68.6 lesser than the original price.

Step-by-step explanation:

The phone sells for $245. It is now on sale for 1/5 of the original price. It means that the amount that was taken off the original price is

1/5 × 245 = $49

The sale price of the phone would be

245 - 49 = $196

April has a coupon for an extra 10% off sale price. It means that the amount he would save off the sale price is

10/100 × 196 = $19.6

The final price that April will pay for the phone is

196 - 19.6 = $176.4

The difference between the original price and price that April will pay for the phone is

245 - 176.4 = $68.6

expression #3 is not equivalent. the others are.

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: