A concert ticket costs $40. Mr. Benson bought 12 tickets and received a 5% discount for every ticket bought that exceeds 10. How much did Mr. Benson pay in all?

Mr. Benson had a 5% discount for each of the 12 - 10 =

<<12-10=2>>2 tickets. So, those two tickets had a $40 x 5/100 = $<<40*5/100=2>>2 discount each. Hence, each ticket cost $40 - $2 = $<<40-2=38>>38 each. Thus, two discounted tickets amount to $38 x 2 = $<<38*2=76>>76. And the other ten tickets amount to $40 x 10 = $<<40*10=400>>400. Hence, Mr. Benson paid a total of $400 + $76 = $<<400+76=476>>476. #### 476 Rachel and Sara want to attend a beauty and modeling contest. They both want to buy new pairs of shoes and dresses. Sara buys a pair of shoes which costs $50 and a dress which costs $200. How much should Rachel budget if she wants to spend twice as much as what Sara spent on the pair of shoes and dress? The cost Rachel should budget for her pair of shoes is $50 * 2 = $<<50*2=100>>100. The cost Rachel should budget for her dress is $200 * 2 = $<<200*2=400>>400. The total Rachel should budget is $100 + $400 = $<<100+400=500>>500. #### 500 A family of 12 monkeys collected 10 piles of bananas. 6 piles had 9 hands, with each hand having 14 bananas, while the remaining piles had 12 hands, with each hand having 9 bananas. How many bananas would each monkey get if they divide the bananas equally amongst themselves? The first 6 bunches had 6 x 9 x 14 = <<6*9*14=756>>756 bananas. There were 10 - 6 = <<10-6=4>>4 remaining bunches. The 4 remaining bunches had 4 x 12 x 9 = <<4*12*9=432>>432 bananas. All together, there were 756 + 432 = <<756+432=1188>>1188 bananas Each monkey would get 1188/12 = <<1188/12=99>>99 bananas. #### 99 An earthquake caused four buildings to collapse. Experts predicted that each following earthquake would have double the number of collapsing buildings as the previous one, since each one would make the foundations less stable. After three more earthquakes, how many buildings had collapsed including those from the first earthquake? The second earthquake caused 2 * 4 = <<2*4=8>>8 buildings to collapse. The third earthquake caused 2 * 8 = <<2*8=16>>16 buildings to collapse. The fourth earthquake caused 16 * 2 = <<16*2=32>>32 buildings to collapse. Including the first earthquake, the earthquakes caused 4 + 8 + 16 + 32 = <<4+8+16+32=60>>60 buildings to collapse. #### 60 James is a first-year student at a University in Chicago. He has a budget of $1000 per semester. He spends 30% of his money on food, 15% on accommodation, 25% on entertainment, and the rest on coursework materials. How much money does he spend on coursework materials? Accommodation is 15% * $1000=$<<15*.01*1000=150>>150 Food is 30% * $1000=$<<30*.01*1000=300>>300 Entertainment is 25% * $1000=$<<25*.01*1000=250>>250 Coursework materials are thus $1000-($150+$300+$250) = $300 #### 300 It's Ava's birthday party. Her parents bought a unicorn piñata for $13 and filled it with all of her favorite treats. They bought 4 bags of Reese's for $9 per bag, 3 bags of Snickers for $5 per bag, and 5 bags of Skittles for $7 per bag. How much did the unicorn piñata and the treats cost altogether? The four bags of Reese's cost $9 x 4 = $<<9*4=36>>36. The three bags of Snickers cost $5 x 3 = $<<5*3=15>>15. The five bags of Skittles cost $7 x 5 = $<<7*5=35>>35. Therefore, the unicorn piñata and the treats cost $13 + $36 + $15 + $35 = $<<13+36+15+35=99>>99. #### 99 Carolyn practices the piano for 20 minutes a day and the violin for three times as long. If she practice six days a week, how many minutes does she spend practicing in a month with four weeks? First find Carolyn's total violin practice time by tripling her piano practice time: 20 minutes/day * 3 = <<20*3=60>>60 minutes/day Then find the total amount of time she spends practicing each day: 60 minutes/day + 20 minutes/day = <<60+20=80>>80 minutes/day Then find the total time she spends practicing each week: 80 minutes/day * 6 days/week = <<80*6=480>>480 minutes/week Then find the total time she spends practicing each month: 480 minutes/week * 4 weeks/month = <<480*4=1920>>1920 minutes/month #### 1920 The file, 90 megabytes in size, downloads at the rate of 5 megabytes per second for its first 60 megabytes, and then 10 megabytes per second thereafter. How long, in seconds, does it take to download entirely? The first 60 megabytes take 60/5=<<60/5=12>>12 seconds. There are 90-60=<<90-60=30>>30 remaining megabytes. The remaining 30 megabytes take 30/10=<<30/10=3>>3 seconds. And 12+3=<<12+3=15>>15 seconds. #### 15 Sam memorized six more digits of pi than Carlos memorized. Mina memorized six times as many digits of pi as Carlos memorized. If Mina memorized 24 digits of pi, how many digits did Sam memorize? Carlos memorized 24/6=<<24/6=4>>4 digits of pi. Sam memorized 4+6=10 digits of pi. #### 10 On a school trip to the seashore, Alan and his friends collected shells. Alan collected four times as many shells as Ben did. Ben got a late start and only collected a third of what Laurie did. If Laurie collected 36 shells how many did Alan collect? Ben collected 36/3=<<36/3=12>>12 shells Alan collected 12*4=<<12*4=48>>48 shells #### 48