use a trial and error strategy to solve this problem.two years ago sam was two-thirds of pam's age. in three years sam will be three-fourths of pam's age. in 20 years the sum of their ages will be 69. how old is sam?
1. 1 • 12 numerical expression variable expression; a is the variable variable expression; there is no variable variable expression; l is the variable 2. f ÷ 7 variable expression; there is no variable numerical expression
1. Who is the oldest? - They are the same age. 2. Who is older, Betty or Tom? They are (of) the same age. (Can we add 'of'? Are the questionsa and answerws right?) 3. Who is heavier, Emily or Mary? 3-1. Both are the same weight.
Harry is twice as old as Doyle. Doyle's age is x years. Write in terms of x. A. Harry's age is 5 years ago. B. Doyle's age is 5 years ago. C. Find Doyle's age now if Harry's age was three times Doyle's age five years ago.
A. Brad is 12 years older than Sam . If Brad were 8 years older than he is now. he would be twice as old as Sam. How old is Sam now? B. Barrie is now 2 years older than Krista. In 15 years Barrie's age will be 2 years more than