John buys a gaming PC for $1200. He decides to replace the video card in it. He sells the old card for $300 and buys a new one for $500. How much money did he spend on his computer, counting the savings from selling the old card?

How much did John spend on the video card? ** He spent an extra 500-300=$

<<500-300=200>>200 on the video card How much did John spend on his computer? ** That means the total cost was 1200+200=$<<1200+200=1400>>1400 #### 1400 Marge planted 23 seeds in her garden. Five of the seeds never grew into plants. A third of the remaining seeds grew, but the plants were eaten by squirrels and rabbits. A third of the number of uneaten plants were strangled by weeds. Marge pulled two weeds, but liked the flowers on one weed and let the plant grow as part of her garden. How many plants did Marge end up with? How many seeds grew into plants? ** Marge had 23 - 5 = <<23-5=18>>18 seeds grow into plants. How many plants were eaten by rabbits? ** Rabbits ate 18 / 3 = <<18/3=6>>6 plants. How many plants were left? ** There were 18 - 6 = <<18-6=12>>12 plants left. How many plants were strangled by weeds? ** Weeds strangled 12 / 3 = <<12/3=4>>4 plants. How many plants did Marge end up with? ** She had 12 - 4 = <<12-4=8>>8 plants left. How many plants did Marge end up with? ** Marge kept 1 weed, so she ended up with 8 + 1 = <<8+1=9>>9 plants. #### 9 In a block of flats, there are 120 apartments. 85% of them have at least 1 resident, while 60% of the apartments have at least two residents. How many apartments have only one resident? How many apartments have at least one resident? ** At least one person lives in 85/100 * 120 = <<85/100*120=102>>102 apartments. How many apartments have at least two residents? ** At least two persons live in 60/100 * 120 = <<60/100*120=72>>72 apartments. How many apartments have only one resident? ** So in every of the 102 - 72 = <<30*1=30>>30 apartments, only one person is living. #### 30 There are 66 goats at a farm and twice as many chickens. If the number of ducks is half of the total of the goats and chickens, and the number of pigs is a third of the number of ducks, how many more goats are there than pigs? How many chickens are there? ** There are 66 x 2 = <<66*2=132>>132 chickens How many goats and chickens are there? ** There are 66 + 132 = <<66+132=198>>198 goats and chickens How many ducks are there? ** There are are 198/2 = <<198/2=99>>99 ducks How many pigs are there? ** There are 99/3 = <<99/3=33>>33 pigs How many more goats are there than pigs? ** There are 66 - 33 = <<66-33=33>>33 more goats than pigs #### 33 A clinic administered the covid vaccine to 650 people. 80% of the people were adults. How many of the vaccinated people were children? How many of the people were children? ** Since 80% of the people were adults, this means 100% - 80% = 20 % were children. How many of the people were children? ** 20% of the people vaccinated were children. The number of children is 20% of 650. How many of the children were vaccinated? ** 20% = 0.2, so 0.2 * 650 = <<0.2*650=130>>130 children were vaccinated. #### 130 Kim's dad would buy her 2 candy bars a week. She would eat 1 candy bar every 4 weeks, saving the rest. After 16 weeks, how many candy bars did Kim have saved? How many candy bars did Kim get? ** Kim got 2 candy bars a week for 16 weeks so she got 2*16 = <<2*16=32>>32 candy bars How many candy bars did Kim eat? ** She would only eat 1 candy bar every 4 weeks so in 16 weeks she only ate 16/4 = <<16/4=4>>4 candy bars How many candy bars did Kim have saved? ** She saved 32 candy bars and only ate 4 so she still has 32-4 = <<32-4=28>>28 candy bars #### 28 James decides to buy a living room set. The coach cost $2500 and the sectional cost $3500 and everything else has a combined cost of $2000. He gets a 10% discount on everything. How much did he pay? How much did the coach, sectional, and everything else cost? ** The combined cost of everything was 2500+3500+2000=$<<2500+3500+2000=8000>>8000 How much did he get a discount? ** So he gets an 8000*.1=$<<8000*.1=800>>800 discount How much did he pay? ** That means he pays 8000-800=$<<8000-800=7200>>7200 #### 7200 During a race transmitted on television, five advertisements were shown, lasting 3 minutes each. One minute of advertising costs $4000. What was the cost of transmitting these advertisements during the race? How many minutes did the ads last? ** During the race, there were five ads, lasting 3 minutes each, so in total, they lasted 5 * 3 = <<5*3=15>>15 minutes. How much did the ads cost? ** So the total cost of these ads was 15 * 4000 = $<<15*4000=60000>>60000. #### 60000 Andy has 4 times as many white socks as he has black socks. If he loses half his white socks, how many more white socks does he still have than black socks if he has 6 black socks? How many white socks does Andy have? ** Andy has 6 x 4 = <<6*4=24>>24 white socks. How many white socks does Andy lose? ** He loses 24/2 = <<24/2=12>>12 white socks. How many more white socks does Andy have than black socks? ** He still has 12 - 6 = <<12-6=6>>6 white socks more than black socks. #### 6 Susan had a bouquet of 3 dozen roses. She gave half to her daughter, and then placed the rest in a vase. The next day, one-third of the flowers in the vase were wilted. After removing the wilted flowers, how many flowers remained in the vase? How many flowers did Susan have? ** Susan had a bouquet of 3 dozen roses, which is 3*12=<<3*12=36>>36 flowers. How many flowers did Susan give to her daughter? ** She gave half, 36/2=<<36/2=18>>18, to her daughter. How many flowers did Susan place in a vase? ** Then she placed her 36-18=<<36-18=18>>18 remaining flowers in a vase. How many flowers were wilted? ** One-third of the 18 flowers in the vase wilted, resulting in 18/3=<<18/3=6>>6 wilted flowers. How many flowers remained in the vase? ** After removing the wilted flowers, Susan had 18-6=<<18-6=12>>12 flowers remaining in the vase. #### 12