A basketball team lost 1/3 of its matches and tied 1/4 of its matches. If the team won 30 matches, how many matches did the team tie?

1/3 + 1/4 = 4/12 + 3/12 = 7/12 < = = losses and ties

12/12 - 7/12 = 5/12 <==won

5/12 of what number = 30

5/12x = 30

x = 30 * 12/5

x = 360/5 = 72 total matches

tied 1/4 of its matches

1/4 (72) = 72/4 = 18 <--they tied in 18 matches