Ben bowled 159 and 186 in his first two games. What must he bowl in his third game to have an average of at least 170?
To find the average of the three games, we need to sum up his scores and divide by 3.
The total of Ben's scores in the first two games is 159 + 186 = <<159+186=345>>345.
To find the minimum score Ben needs in his third game to have an average of at least 170, we multiply the average by 3 and subtract the sum of his scores in the first two games: (170 * 3) - 345 = 510 - 345 = <<(170*3)-345=495>>495.
Therefore, Ben must bowl at least 495 in his third game to have an average of at least 170.