Q 1. Sam purchased 20 dozens of toys at the rate of $ 375 per dozen. He sold each one of them at the rate of $ 33. What was his percentage profit?
Q 2. A trader mixes 26 pounds of rice at $20 per pound with 30 pounds of rice of other variety at $ 36 per pound and sells the mixture at $ 30 per pound. His profit percent is:
Q 3. The population of a town increased from 1,75,000 to 2,62,500 in a decade. The average percent increase of population per year is: