Question

A chess player won 3 out of 4 games, or 75% of her games, during a tournament. Her goal this season is to win 90% of the

tournament games she plays.
How many more consecutive tournament games would she need to win to meet her goal?

Answer 1

She needs to win 6 more consecutive tournament games.

Explanation:

`(3 + x)/(4 + x) = (9)/(10)`

`10(3 + x) = 9(4 + x)`

`30 + 10x = 36 + 9x`

`x = 6`