1. A car can travel 45 miles on 2 gallons of gasoline. How far can it travel on 5.6 gallons?
2. In a mixture of raisins and dates, the ratio by weight of raisins to dates is 7 to 3. How many pounds of raisins will there be in 7 pounds of this mixture?
3. If 5 is x% of 15, then what is x% of 60?
4. If a and b are positive numbers, what is equivalent to a% of 5b?
5. If 20% of n is equal to 40, what is n?
6. The price of a T-shirt was $20. It was first increased by 20%. They did not sell well the shop owner decreased the price by 20%. What is the new price of the T-shirt?
7. George bought a car at $5000 and sold it at $5500. What benefit, in percent, did he make?
8. The price of a pair of trousers was decreased by 22% to $30. What was the original price of the trousers?
9. The price of an item changed from $120 to $100. Then later the price decreased again from $100 to $80. Which of the two decreases was larger in percentage term?
10. The price of an item decreased by 20% to $200. Then later the price decreased again from $200 to $150. What is the percent of decrease from the original price to the final price of $150?
11. If t is 40 percent greater than p, and p is 40 percent less than 600, what is the value of t − p?
12. A beaker contains 15 grams of a water and salt solution that is 20% salt. If x more grams of water are added to the solution, which of the following expresses the percentage of salt in the new solution?
