Question

Mark was thinking of a number. mark adds 11 to it, then doubles it and gets an answer of 40.5. what was the original number?

Answer 1

Answer:

Explanation:

Mark adds 11 to it, then doubles it and gets an answer of 40.5. What was the original number? 2 ( 8.6 + 11). Evaluating the line above gives 39.2 which is not 40.5 which is required but nevertheless the steps above show how to solve the problem you were given.