A wheel makes 2 8/9
revolutions per minute. If it rotates for 30 minutes, how many revolutions does it make? please help. i really don't know.
2 = 18 / 9 so:
2 8/9 = 2 + 8 / 9 =
18 / 9 + 8 / 9 = 26 / 9
2 8/9 revolutions per min • 30 min =
2 8/9 • 30 = 26 / 9 • 30 =
780 / 9 = 3 • 260 / 3 • 3 =
260 / 3 = ( 258 + 2 ) / 3 =
258 / 3 + 2 / 3 = 86 + 2 / 3 = 86 2/3