An aqua park charges $12 admission and $6 for a tour. A group of 10 people goes to the aquarium and takes the tour; while a group of 5 people only goes to the aquarium. How much does the aqua park earn?

A group of 10 people is charged $12 + $6 = $18 each.

So, 10 people pay $18 x 10 = $

<<18*10=180>>180. A group of 5 people pays $12 x 5 = $<<12*5=60>>60 for the admission. Thus, the aqua park earns a total of $180 + $60 = $<<180+60=240>>240. #### 240 A class has 500 tables and 2/5 times as many books as the number of tables in the class are on top of each table. What's the total number of books in the class? If there are 2/5 times as many books as the number of tables in the class on top of each table, there are 2/5*500 = <<2/5*500=200>>200 books. Since the class has 500 tables with 200 books on top of each, there are 500*200 = <<500*200=100000>>100000 books. #### 100000 Walmart sells a multitool with a screwdriver, 3 knives, and two other tools. Target sells a multitool with a screwdriver, twice as many knives as Walmart, three files and a pair of scissors. How many more tools does the Target multitool have compared to Walmart? First find the total number of tools in the Walmart multitool: 1 tool + 3 tools + 2 tools = <<1+3+2=6>>6 tools Then find the total number of knives in the Target multitool: 3 knives * 2 = <<3*2=6>>6 knives Then find the total number of tools in the Target multitool: 1 tool + 6 tools + 3 tools + 1 tool = <<1+6+3+1=11>>11 tools Then subtract the number of tools in the Walmart multitool from the number in the Target multitool to find the difference: 11 tools - 6 tools = <<11-6=5>>5 tools #### 5 There are 235 books in a library. On Tuesday, 227 books are taken out. On Thursday, 56 books are brought back and 35 books are taken out again on Friday. How many books are there now? On Tuesday, 227 books were taken, so there are 235 - 227= <<235-227=8>>8 books left. 56 books were brought back on Thursday, so there are 8 + 56 = <<8+56=64>>64 books in the library. Finally, 35 books are taken out on Friday, leaving 64 - 35 = <<29=29>>29 books available. #### 29 Mary only has 8 screws on hand and needs to buy 2 times more to fix her sink. When she is beginning repairs, she has to split the screws into four sections. How many are in each pile? Mary originally had 8 screws, then went to buy twice more screws and ended up with 8+(8*2)=<<8+8*2=24>>24 of them. She then split them into four piles of 24/4=<<24/4=6>>6. #### 6 Edward had $17.80 to spend at the toy store. He bought 4 toy cars that cost $0.95 each and a race track that cost $6.00. How much money does Edward have left to buy more toys? The cost of the toy cars is 4 × $0.95 = $<<4*0.95=3.80>>3.80. The total cost of the toys is $3.80 + $6.00 = $<<3.80+6=9.80>>9.80. Edward has $17.80 − $9.80 = $8.00 left. #### 8 There are 516 cars in a parking lot. One-third are blue, one-half are red, and the rest are black. How many black cars are on the lot? Blue = 516 * (1/3) = <<516*(1/3)=172>>172 cars Red = 516 * (1/2) = <<516*(1/2)=258>>258 Black = 516 - (172 + 258) = 86 There are 86 black cars on the lot. #### 86 The lunchroom is full of students: 40% are girls and the remainder are boys. There are 2 monitors for every 15 students. There are 8 monitors. Every boy drinks, on average, 1 carton of milk, and every girl drinks, on average, 2 cartons of milk. How many total cartons of milk are consumed by the students in the lunchroom? There is 1 monitor for every fifteen students because 30 / 2 = <<30/2=15>>15 There are 120 students because 8 x 15 = <<8*15=120>>120 60% of the lunchroom is boys because 100 - 40 = <<100-40=60>>60 There are 72 boys because 120 x .6 = <<120*.6=72>>72 There are 48 girls because 120 x .4 = <<120*.4=48>>48 The boys drink 72 cartons of milk because 72 x 1 = <<72*1=72>>72 The girls drink 96 cartons of milk because 48 x 2 = <<48*2=96>>96 They drink 168 cartons of milk because 72 + 96 = <<72+96=168>>168 #### 168 Mike is saving up to buy a house. He puts away 10% of his $150,000 a year salary. He needs to save up 20% of the cost of a $450,000 house for a downpayment. How long will it take? He saves 150,000*.1=$<<150000*.1=15000>>15,000 per year He needs 450,000*.2=$<<450000*.2=90000>>90,000 So he needs to save for 90,000/15,000=<<90000/15000=6>>6 years #### 6 Candy throws 4 pebbles into the lake. Lance throws in 3 times as many pebbles as Candy. How many more pebbles did Lance throw compared to Candy? Lance throws this many pebbles into the lake 4 x 3 = <<4*3=12>>12. He throws this many more pebbles than Candy 12 - 4 = <<12-4=8>>8 pebbles. #### 8