John buys a vacuum cleaner for $250 and a dishwasher for $450. She has a $75 off coupon. How much did he spend?

How much did John spend? ** The combined price was 250+450=$

<<250+450=700>>700 How much did John spend? ** So he paid 700-75=$<<700-75=625>>625 #### 625 A question and answer forum has 200 members. The average number of answers posted by each member on the forum is three times as many as the number of questions asked. If each user posts an average of 3 questions per hour, calculate the total number of questions and answers posted on the forum by its users in a day. How many answers are posted on the forum? ** If each user posts an average of 3 questions per hour, the average number of answers posted on the forum is 3 times the number of questions which totals to 3*3 = <<3*3=9>>9 answers per How many answers are posted on the forum? ** hour. How many questions are asked by each member? ** In a day, with 24 hours, the average number of questions asked by each member is 24*3 = <<24*3=72>>72, How many questions are asked in a day? ** If there are 200 users of the forum, the total number of questions asked is 200*72 = <<200*72=14400>>14400 questions in a day. How many answers are posted in a day? ** At the same time, a member posts an average of 9*24 = <<9*24=216>>216 answers in a day. How many answers are posted in the forum in a day? ** Since there are 200 members who use the forum, the total number of answers posted in the forum in a day is 200*216 = <<200*216=43200>>43200. How many questions and answers are posted on the forum? ** In total, the number of questions and answers posted on the forum is 43200+14400 = <<43200+14400=57600>>57600 #### 57600 Mark and his sister Chris both leave their house for school at the same time. Mark travels at the same speed as Chris, who walks 3 miles per hour. After walking 3 miles Mark has to turn around and go home because he forgot his lunch. If the distance from their house to the school is 9 miles, how much longer does Mark spend walking than Chris? How many miles does Mark walk to get his lunch? ** First find the total number of miles Mark walks to get his lunch by multiplying the distance he walks back to the house by 2: 3 miles * 2 = <<3*2=6>>6 miles How many miles does Mark walk? ** Then find the total distance Mark walks by adding that distance to the distance between the house and the school: 6 miles + 9 miles = <<6+9=15>>15 miles How many hours does Mark spend walking? ** Now divide the total distance Mark walks by his speed to find how many hours he spends walking: 15 miles / 3 miles/hour = <<15/3=5>>5 hours How many hours does Chris spend walking? ** Now divide the total distance Chris walks by her speed to find the total time she spends walking: 9 miles / 3 miles/hour = <<9/3=3>>3 hours How much longer does Mark spend walking than Chris? ** Now subtract the time Chris spends walking from the time Mark spends walking to find the difference: 5 hours - 3 hours = <<5-3=2>>2 #### 2 John attends a protest for 4 days. He then attends a second protest for 25% longer than the first. How many days did he spend protesting? How many days was the second protest? ** The second protest was 4*.25=<<4*.25=1>>1 day longer than the first. How many days was the second protest? ** So the second protest was 4+1=<<4+1=5>>5 days. How many days did he spend protesting? ** Thus he spent 4+5=<<4+5=9>>9 days protesting. #### 9 Mary wants to bake 10 apple pies for a charity event. Each pie needs 8 apples and she already harvested 50 apples from the trees in her garden. How many more apples does she need to buy to make all 10 pies? How many apples does each pie need? ** She needs 10*8=<<10*8=80>>80 apples to make the pies How many more apples does Mary need to buy? ** So she has to buy 80-50=<<80-50=30>>30 more apples #### 30 Jane had a 500 page book to read. The first half of the book Jane read with a speed of 10 pages per day, and the second half with a speed of 5 pages a day. How many days did Jane spend reading this book? How many pages are in the first half of the book? ** Half of the book means 500 / 2 = <<500/2=250>>250 pages. How many days did Jane spend reading the first half of the book? ** Reading the first half took Jane 250 / 10 = <<250/10=25>>25 days. How many days did Jane spend reading the second half of the book? ** Reading the second half of the book took Jane 250 / 5 = <<250/5=50>>50 days. How many days did Jane spend reading the whole book? ** So in total Jane needed 25 + 50 = <<25+50=75>>75 days to read the whole book. #### 75 Adam has an orchard. Every day for 30 days he picks 4 apples from his orchard. After a month, Adam has collected all the remaining apples, which were 230. How many apples in total has Adam collected from his orchard? How many apples did Adam pick in total? ** During 30 days Adam picked 4 * 30 = <<4*30=120>>120 apples. How many apples in total has Adam collected from his orchard? ** So in total with all the remaining apples, he picked 120 + 230 = <<120+230=350>>350 apples from his orchard. #### 350 A new book sold 15 copies at the bookstore on Wednesday. On Thursday the book sold three times that many copies. On Friday the book sold one-fifth the number of copies it did on Thursday. How many copies of the book did the bookstore sell by Friday? How many books were sold on Thursday? ** On Thursday 15*3=<<15*3=45>>45 books were sold. How many books were sold on Friday? ** On Friday 45/5=<<45/5=9>>9 books were sold How many books were sold by Friday? ** Adding up all three days 15+45+9=<<15+45+9=69>>69 books were sold by Friday #### 69 Sarah makes 5 times more money per hour than Connor does. If Connor earns $7.20 per hour, how much does Sarah make in an 8-hour day? How much does Connor make? ** Sarah makes $7.2 * 5 = $<<7.2*5=36>>36 per hour How much does Sarah make in an 8-hour day? ** Sarah makes $36 * 8 = $<<36*8=288>>288 per day. #### 288 Randy walks his dog twice a day. After each walk, he wipes his dog's paws off with a baby wipe. The baby wipes come 120 wipes per pack. How many packs will he need to make sure he has enough wipes for 360 days? How many days will the baby wipes last? ** He uses 2 wipes a day and the pack of baby wipes come 120 wipes per pack so they will last 120/2 = 60 days How many packs will he need? ** He needs enough to last for 360 days and 1 pack will last 60 days so he needs 360/60 = <<360/60=6>>6 packs #### 6