Algebra( Week 21 Evaluation) 1. If 6x is deducted by 4y, and the difference is then multiplied by , which of the following is the result? 2. Which of the following is the correct representation of phrase "10 less than 9 times x"? 3. Ben is now 12 years old, and is 6 years older than Jessica. In how many years will Ben be 3 times as old as Jessica is now? 4. 4 years ago, Julia was 4 years older than Steve is now. If Steve's present age is X, what will be Julia's age 3 years from now? 5. Kevin is 4 years younger than David. Eric is one fourth as old as David is now. If Eric will be 13 years old 7 years from now, how old is Kevin now? 6. 6 years from now, Ben will be twice as old as Susan is now. If Susan's present age is Y, what was Ben's age 5 years ago? 7. Edward is 3 times as old as Sofia is now. 9 years from now, he will be twice as old as Sofia then. How old is Sofia now? 8. In a certain class, the number of students who have five letter or less in their last names is 3 times of the students who have more than five letters in their last names. If there are a total of 28 students, how many students are there in the class who have five letters or less in their last names? 9. There is a larger circle C with an area of 196π. You are asked to draw two circles A and B without overlapping within circle C. What is the largest possible sum of circumferences of A and B?
10. 5 years from now, Kevin will be twice as old as Jessica is now. If Kevin's present age is Y, what will be Jessica's age 4 years from now? |