The tornadoes have won 75% of their games. If they their next 4 games, their win percentage goes up to 80%. How many games have they played right now? (Please explain how to solve this problem)

Answer 1

have played x

have won .75 x

will have won .75 x + 4

will have played x + 4

so
.75 x + 4 = .80 (x +4)

4 - .8*4 = .05 x

4 - 3.2 = .05 x

.8 = .05 x

800 = 5 x

x = 160