[Question]: James buys 200 lotto tickets for 2 dollars each. Of those tickets 20% are winners. 80% of the winners are for 5 dollars. 1 ticket is the grand prize of $5,000. The other tickets win an average of $10. How much did he profit?
[Answer]: He spent 200 * 2 = $400. There were 200 * .2 = 40 tickets. Of those 40 * .8 = 32 are 5 dollar winners. So they win 32 * 5 = $160. He has 40 - 32 = 8 other winning tickets. Of those 8 - 1 = 7 wins $10. So they win 10 * 7 = $70. So he won 5000 + 70 + 160 - 400 = $4830.
So the answer is 4830.

[Question]: For the funfair, the school organizers ordered 30 rolls of tickets. Each roll of tickets has 100 tickets. The 4th graders bought 30% of the tickets while the 5th graders bought 50% of the remaining tickets. Then the 6th graders bought a total of 100 tickets. How many tickets were left unsold?
[Answer]: There were a total of 30 x 100 = 3000 tickets ordered by the school organizers. The 4th graders bought 3000 x 30 / 100 = 900 tickets. So, there were 3000 - 900 = 2100 tickets left for the other two grade levels. The 5th graders bought 2100 x 50 / 100 = 1050 tickets. So, 2100 - 1050 = 1050 tickets were left then. Since 100 tickets were bought by the 6th graders, therefore 1050 - 100 = 950 tickets were left unsold.
So the answer is 950.

[Question]: In a game, Samanta has 8 more points than Mark, and Mark has 50% more points than Eric. Eric has 6 points. How many points do Samanta, Mark, and Eric have in total?
[Answer]:
Mark has 50 / 100 * 6 = 3 points more than Eric. So Mark has 6 + 3 = 9 points. That means Samanta has 9 + 8 = 17 points. So in total Samanta, Mark, and Eric have 6 + 9 + 17 = 32 points.
So the answer is 32.