What 76,569,878 + 790 divided by 10 ppl + 7/

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?

Me find the value of x each figure.