the price of a sweater was reduced from 20$ to 12$. what percent was the price of the sweater reduced?​

Ahigh definition tv cost $800 with a down payment of 2/5 of the cost. how much is left to pay, in dollars after the down payment has been made?

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.