Horace take a taxi uptown and the fare is $12.78 he wants to give the taxi a 10% tip if horace gives the driver a $20 bill how much change should he ask for

32

step-by-step explanation:

these are your clues: 1. kim ran 18 races2. this was four fewer races than twice thenumber, notice it says twice the number, so you would do the equation 18x2-4; which equals the number 32.thus, 32 is your answer.