95% passed test i, 90% passed test ii, 85% passed test iii, what is the probability of passing all 3 tests

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults. how many students and adults went if the ticket charge was $42.75

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?