Matt has answered 20/25 questions on a test. what percentage of the test has he completed?

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.