After Michael 110 baseball cards to Sally and 75 to Heidi, he still has 315 left. What percent of his cards did Michael give away?

110 + 75... and then??

3 answers

total cards = 110 + 75 + 315

gave away = 110 + 75

percent given = 100 (110+75)/(110+75+315)
185 + 315 = 500

185 / 500 = 0.37 = 37%
Thanks alot.