Question 1: The price of corn was $4/bushel on January 2009 and $7/bushel on January 2010. By what percentage did the corn price change from January 2009 to January 2010? 25% 40% 50% 75% 100% Question 2: A family plans to spend 5% of its income on vacations? If the annual family income is $70,000, how much can they spend for vacations? $2,500 $3,000 $3,500 $4,000 $7,000 Question 3: The marked price of shirts in a store is $30. During one week, the store sells m shirts at the marked price and n shirts discounted 10% of the marked price. Which of the following is an expression of the store revenue from shirts sold during that week? 30m + 30n 30m + 27n 30(m + .1n) 27m + 30n 27m + 27n Question 4: A number is increased 20% and the resulting number is decreased 50%. The final number is what percent of the original number? 60% 70% 80% 90% 100% Question 5: A bag of table tennis balls costs $12. There are 15 balls in the bag. How much does each ball cost? $0.45 $0.60 $0.75 $0.80 $0.90 Press the Submit button to see the results.