Brittney can chop 15 onions in 5 minutes. Carl can chop 20 onions within that same time. How many more onions can Carl chop in 30 minutes than Brittney?

Brittney can chop 15/5 =

<<15/5=3>>3 onions in one minute. Carl can chop 20/5 = <<20/5=4>>4 onions in one minute. Brittney can chop 3 x 30 = <<3*30=90>>90 onions in 30 minutes. Carl can chop 4 x 30 = <<4*30=120>>120 onions in 30 minutes. Carl can chop 120 - 90 = <<120-90=30>>30 more onions than Brittney in 30 minutes. #### 30 Leo has to write a 400-word story for his literature class. 10 words fit on each line of his notebook and 20 lines fit on each page. Lucas has filled one and a half pages. How many words does he have left to write? Half a page is 20 / 2 =<<20/2=10>>10 lines. In total, he has written 20 + 10 = <<20+10=30>>30 lines. The 30 lines written are 30 * 10 = <<30*10=300>>300 words. Lucas has 400 - 300 = <<400-300=100>>100 words left to write. #### 100 A mother duck as 8 ducklings. The first 3 ducklings find 5 snails each. Another 3 ducklings find 9 snails each, and the remaining ducklings each find half the number of snails that mother duck finds. If mother duck finds tree times the total number of snails as the first 2 groups of ducklings, how many snails does the family of ducks have collectively? The first 3 ducklings find 3 x 5 = <<3*5=15>>15 snails The next 3 ducklings find 3 x 9 = <<3*9=27>>27 snails They find a total of 15 + 27 = <<15+27=42>>42 snails Mother duck finds 42 x 3 = <<42*3=126>>126 snails The last group has 8 - 3 - 3 = <<8-3-3=2>>2 ducklings They find 126/2 = <<126/2=63>>63 snails each The family of ducks found a total of 42 +126 + 63 + 63 = <<42+126+63+63=294>>294 snails #### 294 Maria is a saleswoman at a flower shop. On the first day, she sold 30 tulips and 20 roses. The next day, she doubled the previous day's sales. On the third day, she sold only 10% of the tulips sold on the second day and 16 roses. The price of one tulip is $2 and one rose is $3. How much did Maria earn over these three days? On the second day, Maria sold 30 * 2 = <<30*2=60>>60 tulips. She also sold 20 * 2 = <<20*2=40>>40 roses the second day. On the third day, Maria sold only 10/100 * 60 = <<10/100*60=6>>6 tulips. Over these three days Maria sold 30 + 60 + 6 = <<30+60+6=96>>96 tulips. She also sold 20 + 40 + 16 = <<20+40+16=76>>76 roses. So on the tulips Maria earned 96 * 2 = $<<96*2=192>>192. And on roses Maria earned 76 * 3 = $<<76*3=228>>228. In total, over these three days, Maria has earned 192 + 228 = $<<192+228=420>>420. #### 420 Stacy just bought a 6 month prescription of flea & tick medicine for her dog for $150.00 online. Her cashback app was offering 10% cashback and she has a mail-in rebate for $25.00 on a 6-month prescription. How much will the medicine cost after cash back and rebate offers? Her cash back app gave her 10% back on $150.00 so that's .10*150 = $<<10*.01*150=15.00>>15.00 cash back She received $15.00 from the cashback app and has a $25.00 mail-in rebate for a total of 15+25 = $<<15+25=40.00>>40.00 discounts She spent $150.00 for the medicine and has $40.00 worth of discounts so the medicine will cost 150-40 = $<<150-40=110.00>>110.00 #### 110 At Penny’s bakery, her famous blueberry cheesecakes are $7 a slice. Each cheesecake pie is cut into 6 thick slices. If she sells 7 cheesecake pies, how much money does she make? There are a total of 7 x 6 = <<7*6=42>>42 cheesecake slices. She makes a total of 42 x $7 = $<<42*7=294>>294. #### 294 The company's data entry team had 5 employees working on a large project. Rudy types 64 words per minute, Joyce types 76 words per minute, Gladys types 91 words per minute, Lisa types 80 words per minute and Mike types 89 words per minute. What is the team's average typed words per minute? Rudy types 64, Joyce types 76, Gladys types 91, Lisa types 80 and Mike types 89 so 64+76+91+80+89 = <<400=400>>400 There are 5 team members, so they type at an average speed of 400/5 = <<400/5=80>>80 words per minute #### 80 The sum of Mario and Maria's ages now is 7. Mario is 1 year older than Maria. How old is Mario? If x is Maria's age, then Mario's age is x + 1. The equation that represents the sum of their ages is x + x + 1 = 7. By combining like terms, the equation becomes 2x = 6. Hence, the value of x which represents the age of Maria is 6/2=<<6/2=3>>3. So Mariu is 3 + 1 = <<3+1=4>>4 years old. #### 4 Maria wants to paint a picture and needs some tools to do that. She wants to buy a set of brushes for $20 and some canvas for three times more than the brushes. The paint costs Maria $8 per liter, and she needs at least 5 liters. How much money will she earn on the painting if she will be able to sell it for $200? Maria wants to pay 3 * 20 = $<<3*20=60>>60 for the canvas. Maria needs 5 liters of paint, so the cost of it would be 8 * 5 = $<<8*5=40>>40. So in total Maria will earn 200 - 40 - 60 - 20 = $<<200-40-60-20=80>>80 if she will be able to sell the painting at the mentioned price. #### 80 In preparation for his mountain climbing, Arvin wants to run a total of 20 kilometers in a week. On the first day, he ran 2 kilometers. On each subsequent day, he increased his running distance by 1 kilometer over the previous day. If he runs for 5 days a week, how many kilometers did he run on the 5th day? On the second day, Arvin ran 2 + 1 = <<2+1=3>>3 kilometers. On the third day, he ran 3 + 1 = <<3+1=4>>4 kilometers. On the fourth day, he ran 4 + 1 = <<4+1=5>>5 kilometers. So on the fifth day, he ran 5 + 1 = <<5+1=6>>6 kilometers. #### 6