Autumn was constantly misplacing her pencils. At the start of the school year, she purchased a pack of 20 pencils. In the first month of school, she misplaced 7 pencils, broke 3 pencils and had to throw them away, she found 4, and bought 2. How many pencils did Autumn have left?

Autumn misplaced 7 and broke 3, so that lost her 7+3 =

<<7+3=10>>10 pencils Autumn found 4 pencils and bought 2, so she gained 4+2 = <<4+2=6>>6 pencils She started with 20 pencils, lost 10 and gained 6 so she had 20-10+6 = <<20-10+6=16>>16 pencils left #### 16 36 liters of diesel fuel is worth €18. The tank of this pickup truck can hold 64 liters. How much does a full tank of diesel fuel cost? A liter of diesel costs 18/ 36 = <<18/36=0.5>>0.5 €. 64 liters of diesel fuel cost 0.5 X 64 = <<64*0.5=32>>32 € #### 32 Big boxes contain 7 dolls each. Small boxes contain 4 dolls each. There are 5 big boxes and 9 small boxes. How many dolls are there in total? There are 7*5=<<7*5=35>>35 dolls in the big boxes. There are 4*9=<<4*9=36>>36 dolls in the small boxes. There are 35+36=<<35+36=71>>71 dolls altogether. #### 71 Kim spends $25,000 to open a store. She makes $4000 a month in revenue and her expenses are $1500 a month. How long would it take to pay back the cost to open the store? Her profit is 4000-1500=$<<4000-1500=2500>>2500 So it takes 25000/2500=<<25000/2500=10>>10 months to make back the money #### 10 The sum of the three sides of a triangle is 50. The right side of the triangle is 2 cm longer than the left side. Find the value of the triangle base if the left side has a value of 12 cm. If the left side of the triangle is 12, and the right side is 2 cm longer, the right side is 12+2 = <<12+2=14>>14 cm long. The sum of the left and right sides of the triangle is 14+12 = <<14+12=26>>26 cm. If the sum of all sides of the is 50, and the left and right sides of the triangle are 26, the triangle base is 50-26 = <<50-26=24>>24 cm. #### 24 Dexter went to the mall and saw that Apple products are on sale. He wants to buy an iPhone 12 with a 15% discount and an iWatch with a 10% discount. The price tag shows that an iPhone 12 costs $800 while an iWatch costs $300. Upon check out, he will receive a further 2% cashback discount. How much would the items cost in total after the discount and cashback? The discount for an iPhone 12 is $800 x 15/100 = $<<800*15/100=120>>120. So, the iPhone will now cost $800 - $120 = $<<800-120=680>>680. The discount for an iWatch is $300 x 10/100 = $<<300*10/100=30>>30. So, the iWatch will now cost $300 - $30 = $<<300-30=270>>270. The total cost of the iPhone and iWatch is $680 + $270 = $<<680+270=950>>950. The cashback will be $950 x 2/100 = $<<950*2/100=19>>19. Thus, Dexter will only pay $950 - $19 = $<<950-19=931>>931. #### 931 Daniel collects Russian dolls that normally cost $4 each. He saves enough money to buy 15 Russian dolls. However, the price suddenly drops to $3 each. How many Russian dolls can he buy now at the discounted price, given his savings? With the price of each doll at $4, this means he has saved a total of 15 * 4 = $<<15*4=60>>60. When the price is lowered to $3 each, he can now purchase 60 / 3 = <<60/3=20>>20 dolls. #### 20 To make yogurt, the company needs milk and fruit. Milk is bought at $1.5 per liter and fruit at $2 per kilogram. To make one batch of yogurt, the company needs 10 liters of milk, and 3 kilograms of fruit. How much does it cost the firm to produce three batches of yogurt? For the fruits, the company needs to pay 3 * 2 = $<<3*2=6>>6 per batch. 10 liters of milk is a cost of 10 * 1.5 = $<<10*1.5=15>>15 for the company. So in total one batch is a cost of 15 + 6 = $<<15+6=21>>21. So three batches of yogurt is a cost of 3 * 21 = $<<3*21=63>>63. #### 63 To get his fill of oysters, Crabby has to eat at least twice as many oysters as Squido does. If Squido eats 200 oysters, how many oysters do they eat altogether? If Squido eats 200 oysters, when Crabby eats twice as many oysters as Squido does, he eats 2*200 = 400 oysters. Together, they eat 400+200 = <<400+200=600>>600 oysters. #### 600 Jerry works as an independent contractor for a company that pays him $40 per task. If each task takes him two hours to complete and he works 10 hours a day for a whole week, calculate the total amount of money he would earn at the end of the week. If a task takes two hours to complete and Briar works for ten hours a day, he manages to complete 10/2= five tasks a day. Since each task pays him $40, for the five tasks, he makes $40*5 = $<<40*5=200>>200 If he works for a whole week, he makes $200*7= $<<200*7=1400>>1400 #### 1400