John assembles widgets at a factory. He can make 20 widgets an hour and works for 8 hours a day 5 days a week. How many widgets does he make a week?

He works 8*5=

<<8*5=40>>40 hours So he made 20*40=<<20*40=800>>800 widgets #### 800 A pharmacy is buying enough tubs for them to make their prescriptions this week. They already have 20 tubs left in storage but they need a total of 100 tubs for the week. Of the tubs they still need to buy, they buy a quarter from a new vendor then decide to go to their usual vendor for the rest. How many tubs is the pharmacy going to buy from the usual vendor? They already have 20 tubs in storage, so they only need to buy 100 needed tubs - 20 tubs in storage = <<100-20=80>>80 tubs. From the new vendor, they buy 80 tubs / 4 = <<80/4=20>>20 tubs. They now have a total of 20 + 20 = <<20+20=40>>40 tubs. They are therefore going to buy 100 needed tubs - 40 owned tubs = <<100-40=60>>60 tubs from the usual vendor. #### 60 Sam is stocking up on canned tuna. He got 9 cans at the supermarket, and had 5 coupons for 25 cents off a single can per coupon. He paid $20 and got $5.50 in change. How many cents does a can of tuna cost? His total without the coupons was $20 - $5.50 = $<<20-5.5=14.50>>14.50 He had 5 coupons that each saved him 25 cents, so the full price of all the tuna is $14.50 + 5*$0.25 =$15.75. He bought 9 cans of tuna, so each can costs $15.75 / 9 = $<<15.75/9=1.75>>1.75 As 1 dollar has 100 cents 1.75 * 100 = <<1.75*100=175>>175 cents #### 175 Kimberly loves gumballs and will trade almost anything she owns for them. A friend knows that Kim has a bunch of shiny new earrings that she loves. She agrees to give Kim 9 gumballs for each pair of earrings. On the first day, Kim brings her 3 pairs of earrings. On the second she brings her twice as many. On the third day, she brings 1 less than she brought on the second day. If Kim eats 3 gumballs a day, how many days will the gumballs last? On day 2 Kim trades 6 earrings because 3 x 2 = <<6=6>>6 On day 3 Kim trades 5 earrings because 6 - 1 = <<6-1=5>>5 In total she trades 14 pairs of earrings because 3 + 6 + 5 = <<3+6+5=14>>14 She trades these for 126 gum-balls because 14 x 9 = <<14*9=126>>126 These last her 42 days because 126 / 3 = <<126/3=42>>42 #### 42 Billy wants to watch something fun on YouTube but doesn't know what to watch. He has the website generate 15 suggestions but, after watching each in one, he doesn't like any of them. Billy's very picky so he does this a total of 5 times before he finally finds a video he thinks is worth watching. He then picks the 5th show suggested on the final suggestion list. What number of videos does Billy watch? Billy has 15 suggestions generate for him 5 times for 15*5=<<15*5=75>>75 videos. There are 15-5 = <<15-5=10>>10 shows in the final set of suggestions he doesn't consider This means he picks the 75 - 10 = <<75-10=65>>65th show YouTube suggests #### 65 Exactly two-fifths of NBA players who signed up for a test are aged between 25 and 35 years. If three-eighths of them are older than 35, and a total of 1000 players signed up, how many players are younger than 25 years? Two-fifths of 1000 players is (2/5)*1000 = <<(2/5)*1000=400>>400 players Three eights of 1000 players is (3/8)*1000 = <<(3/8)*1000=375>>375 players The total number of players 25 or older is 400+375 = <<400+375=775>>775 The number of players younger than 25 years is 1000-775 = <<1000-775=225>>225 players #### 225 A store marks a book 30% above the cost. But during a sale, a 10% discount was given. If the book costs $50, what is the percent profit? The store made a $50 x 30/100 = $<<50*30/100=15>>15 profit for selling it 30% above the cost. So, the book was sold for $50 + $15 = $<<50+15=65>>65. During a sale, the book’s selling price decreased by $65 x 10/100 = $<<65*10/100=6.50>>6.50. So, the book was sold for $65 - $6.50 = $<<65-6.5=58.50>>58.50. There was $58.50 - $50 = $<<58.5-50=8.50>>8.50 profit after the discount. Therefore, the percent profit is $8.50/$50 x 100% = <<8.5/50*100=17>>17%. #### 17 The state of Virginia had 3.79 inches of rain in March, 4.5 inches of rain in April, 3.95 inches of rain in May, 3.09 inches of rain in June and 4.67 inches in July. What is the average rainfall amount, in inches, in Virginia? It rained for a total of 3.79+4.5+3.95+3.09+4.67 = <<3.79+4.5+3.95+3.09+4.67=20>>20 inches The rain period is from March through July for a total of 5 months so the average rainfall is 20/5 = <<20/5=4>>4 inches of rain per month #### 4 Jennifer's boyfriend left 5 texts about the grocery shopping, 5 times more texts asking why she wasn't responding, and a number of texts equal to 10% of all the texts he sent previously saying he was calling the police. How many texts did he send total? First find how many texts Jennifer's boyfriend sent asking why she wasn't responding: 5 texts * 5 = <<5*5=25>>25 texts Then add that number to the number of grocery shopping texts: 25 texts + 5 texts = <<25+5=30>>30 texts Then multiply that number by 10% to find how many texts he sent about calling the police: 30 texts * 10% = <<30*10*.01=3>>3 texts Then added how many texts of each kind he sent to find the total number of texts he sent: 3 texts + 30 texts = <<3+30=33>>33 texts #### 33 In Mr. Bolton's class of 25 students, 2/5 of the students like maths, 1/3 of the remaining students like science, and the rest of the students like history. Calculate the combined total number of students who like history and those who like maths. If there are 25 students in the class, then 2/5*25 = <<2/5*25=10>>10 students like maths. The number of students who don't like math is 25-10 = <<25-10=15>>15 students. If 1/3 of the students that don't like math like science, then 1/3*15 = <<1/3*15=5>>5 students like science. The remaining number of students who enjoy history is 15-5 =<<15-5=10>>10 The combined total for the students who want history and maths is 10+10 = <<10+10=20>>20 #### 20