Bethany is working at the front desk at Joe’s Gym. There were some people lifting weights when she started her shift. Then 5 more people came in and started running on the treadmill and 2 people left. There are now 19 people in the gym. How many people were lifting weights at the start of Bethany’s shift?

We know that 5 people came in and 2 people left after Bethany’s shift started, so there was a net change of 5 – 2 =

<<5-2=3>>3 people. If there are 19 people now in the gym and that is 3 more than when Bethany’s shift started, we know there were 19 – 3 = <<19-3=16>>16 people lifting weights at the start of her shift. #### 16 Donna worked 2 hours every morning walking dogs in her neighborhood for $10.00 an hour. 5 days a week, after school, she worked at a card shop for 2 hours and made $12.50 an hour. On the weekends, she usually made $10.00 an hour babysitting and was guaranteed 4 hours every Saturday from her neighbor. How much money did she make over 7 days? She makes $10.00 an hour for 2 hours walking dogs so she makes 10*2 = $<<10*2=20.00>>20.00 every morning Over 7 days she makes 7*20 = $<<7*20=140.00>>140.00 a week She makes $12.50 for 2 hours working at a card shop so she makes 12.5*2 = $<<12.5*2=25.00>>25.00 She works there 5 days a week so she makes 5*25 = $<<5*25=125.00>>125.00 a week She also babysits for 4 hours making $10.00 an hour for a total of 4*10 = $<<4*10=40.00>>40.00 Over 7 days, she makes 140+125+40 = $<<140+125+40=305.00>>305.00 #### 305 Anna used four baking trays to bake cupcakes. Each tray has 20 cupcakes and each cupcake was then sold for $2. If only 3/5 of the cupcakes were sold and the rest were kept, how much did Anna earn from it? Anna baked 4 x 20 = <<4*20=80>>80 cupcakes. She sold 80 x 3/5 = <<80*3/5=48>>48 cupcakes. Thus, she earned 48 x $2 = $<<48*2=96>>96 from it. #### 96 A farmer living in the countryside has a certain number of children. One day, they followed him to the farm, each one with a bag to collect harvested apples. At the end of the day, each bag was filled with 15 apples each. On their way back home, 2 of the children have eaten 4 apples each and another child sold 7 of his apples. If they had a total of 60 apples left by the time they got home, how many children does the farmer have? 2 children sold 4 apples each which gives 2*4 = <<2*4=8>>8 apples Another child gave out an additional 7 apples making 8+7 = <<8+7=15>>15 apples removed from the total There were 60 apples left after these, so the original total must have been 15+60 = <<15+60=75>>75 apples Each child collected 15 apples so there are 75/15 = 5 children #### 5 Celine collected twice as many erasers as Gabriel did. Julian collected twice as many erasers as Celine did. If they collected 35 erasers in total, how many erasers did Celine collect? Let x represent the number of erasers Gabriel collected. Celine collected 2*x erasers. Julian collected 2*x*2=4*x erasers. In total, Gabriel, Celine and Julian collected x+2*x+4*x=7*x erasers. 7*x=35 x=<<5=5>>5 Celine collected 5*2=<<5*2=10>>10 erasers. #### 10 Jan buys 5 dozen roses. Each rose cost $6. Since he bought so many he only needs to pay 80%. How much did he pay? He got 5*12=<<5*12=60>>60 roses So the cost was 6*60=$<<6*60=360>>360 So he has to pay 360*.8=$<<360*.8=288>>288 #### 288 Danny made chocolate cookies for his class and made sure each cookie had exactly 7 chips. He made 4 dozen in total. If the class eats half the cookies, how many chips are left uneaten? There are 48 cookies because 12 x 4 = <<12*4=48>>48 There are 24 cookies left because 48/2=<<24=24>>24 There are 168 chips left because 24 x 7 = <<24*7=168>>168 #### 168 John bakes 12 coconut macaroons, each weighing 5 ounces. He then packs an equal number of the macaroons in 4 different brown bags, ready for delivery. When he briefly leaves the kitchen to pick the phone, his little brother Steve eats the entire contents of one of the brown bags. What is the total weight, in ounces, of the remaining coconut macaroons? Each brown bag has 12/4 = <<12/4=3>>3 macaroons After Steve eats a bag, there are 12-3 = <<12-3=9>>9 macaroons left The total weight is therefore 9 * 5 = <<9*5=45>>45 ounces. #### 45 Gervais drove an average of 315 miles for 3 days. Henri drove a total of 1,250 miles over one week. How many miles farther did Henri drive? Gervais drove 3*315 = <<3*315=945>>945 miles 1250 - 945 = <<1250-945=305>>305 miles Henri drove 305 miles farther. #### 305 Rick likes to separate his collection of books into various groups by genre. He has 400 books in total and proceeds to divide them into two separate equally-sized categories repeatedly until he has each book in a category with 24 other books. How many times must he break these groups into smaller groups to accomplish this? Rick starts with 400 books and divides them into two categories of equal size, meaning there are two categories of 400/2= <<400/2=200>>200 books. Rick repeats this process again, dividing the 200 book categories into equal halves, leaving him with 200/2=<<200/2=100>>100 books in each. Rick repeats this process again, dividing the 100 book categories into equal halves, leaving him with 100/2=<<100/2=50>>50 books in each. Rick repeats this process again, dividing the 50 book categories into equal halves, leaving him with 50/2=<<50/2=25>>25 books in each. Since Rick is looking for categories with 25 books in each, he accomplishes this by the 4th step. #### 4