A laboratory needs flasks, test tubes, and safety gear to carry out its experiments. They were given a $325 budget for the month. They bought $150 worth of flasks, spent two-thirds of that amount on test tubes, and used half of the test tube cost on safety gear. How many dollars of their budget remained?

The laboratory spent 2 / 3 * 150 = 300 / 3 = $

<<2/3*150=100>>100 on test tubes. They spent a further 100 / 2 = $<<100/2=50>>50 on safety gear. In all, they spent 150 + 100 + 50 = $<<150+100+50=300>>300. Thus, 325 - 300 = $<<325-300=25>>25 of the laboratory’s budget remained. #### 25 Amanda received $50 as a gift. She plans to buy two cassette tapes that cost $9 each and a headphone set that costs $25. How much money will she have left? Amanda spent 2 tapes * $9/tape + $25 = $<<2*9+25=43>>43. Amanda has $50 - $43 = $<<50-43=7>>7 left. #### 7 On Monday, while at work on the farm, Jeremy picks 100 oranges. On Tuesday, together with his brother, they pick thrice as much. On Wednesday he feels tired and is only able to pick 70 oranges. What's the total number of oranges they have? On Monday he picks 100 oranges. On Tuesday, they pick thrice as much, which will be 3*100 = <<3*100=300>>300 oranges. The total number of oranges picked now is 300+100 = <<300+100=400>>400 oranges. On Wednesday, he adds 70 more, which will now be 400+70 = <<470=470>>470 oranges #### 470 John's hair grows 1.5 inches every month. Every time it gets to 9 inches long he cuts it down to 6 inches. A haircut costs $45 and he gives a 20% tip. How much does he spend on haircuts a year? He cuts off 9-6=<<9-6=3>>3 inches when he gets a haircut That means he needs to cut it every 3/1.5=<<3/1.5=2>>2 months So he gets 12/2=<<12/2=6>>6 haircuts a year He gives a 45*.2=$<<45*.2=9>>9 tip So that means each hair cut cost 45+9=$<<45+9=54>>54 So he pays 54*6=$<<54*6=324>>324 a year #### 324 John has started at a job he works every day 10 days ago. So far, he's made $250. How many more days must John work before he makes twice this amount, assuming he makes the same amount every day? John has made $250 in 10 days, so this means he makes $250/10=<<250/10=25>>25 dollars a day. Since John wants to make double his current amount, this means he wants to make 250*2=<<250*2=500>>500 dollars This means John needs to work 500/25= <<500/25=20>>20 days in total to make 500. As John has already worked 10 days, this means he needs to work 20-10=<<20-10=10>>10 more days to make his goal. #### 10 Lighters cost $1.75 each at the gas station, or $5.00 per pack of twelve on Amazon. How much would Amanda save by buying 24 lighters online instead of at the gas station? First find how many packs Amanda would have to buy on Amazon: 24 lighters / 12 lighters/pack = <<24/12=2>>2 packs Then multiply that number by the cost per pack to find the total cost from Amazon: 2 packs * $5/pack = $<<2*5=10>>10 Then multiply the total number of lighters Amanda buys by the cost per lighter at the gas station: 24 lighters * $1.75/lighter = $<<24*1.75=42>>42 Then subtract the total Amazon cost from the total gas station cost to find the savings: $42 - $10 = $<<42-10=32>>32 #### 32 Jack has 65 pounds of sugar today. Tomorrow he will use 18 pounds of sugar and the following day he will buy 50 more pounds of sugar. How many pounds will he have in the end? Jack will have 65-18 = <<65-18=47>>47 pounds of sugar tomorrow. Jack will have 47+50 = <<47+50=97>>97 pounds of sugar the following day. #### 97 Renne earns $4000 per month and wants to save half of her monthly earnings to buy the vehicle of her dreams worth $16000. How many months of saving will it take her to buy the vehicle? If she's saving half her salary every month, she saves 1/2*$4000 = $<<1/2*4000=2000>>2000 every month. If the vehicle is worth $16000, and she saves $2000 every month to buy it, she will have to save for 16000/2000 = <<16000/2000=8>>8 months. #### 8 Marie has 98 unread messages on her phone. She decides to clear them by reading 20 messages a day. However, she also gets 6 new messages a day. How many days will it take her to read all her unread messages? Marie will read 20 but gain 6 unread messages a day, so she will lower the number of messages by 20 - 6 = <<20-6=14>>14. Thus, it will take her 98 / 14 = <<98/14=7>>7 days to read all her unread messages. #### 7 Bob has to hire someone to fix his garden. A storm destroyed all 20 of his rose bushes. He decides to replant all the rose bushes. Each rose bush costs $150. He also needs to pay a gardener $30 an hour, 5 hours each day for 4 days. The final expense is 100 cubic feet of soil sold for $5 per cubic foot. How much did the entire gardening project cost? The roses cost 150*20=$<<150*20=3000>>3000 The gardener works 4*5=<<4*5=20>>20 hours So the gardener charges 30*20=$<<30*20=600>>600 The soil added another 5*100=$<<5*100=500>>500 So in total the cost was 3000+600+500=$<<3000+600+500=4100>>4100 #### 4100