Flora has been experiencing frequent fractures. Dr. Juan has asked her to strengthen her bones by drinking 105 gallons of milk within 3 weeks. Flora thinks that drinking 3 gallons of milk daily will be enough, but her brother says she'll still need to drink more. To fulfill Dr. Juan’s requirement, how many more gallons must Flora drink daily?

3 weeks translate to 3 * 7 days =

<<3*7=21>>21 days. To meet Dr. Juan’s recommendation would mean drinking 105/21 = <<105/21=5>>5 gallons daily. This means that Flora must drink 5 -3 = <<5-3=2>>2 more gallons daily. #### 2 John buys a box of 40 light bulbs. He uses 16 of them and then gives half of what is left to a friend. How many does he have left? He had 40-16=<<40-16=24>>24 left after using some Then after giving some away he is left with 24/2=<<24/2=12>>12 #### 12 Emily has 6 marbles. Megan gives Emily double the number she has. Emily then gives Megan back half of her new total plus 1. How many marbles does Emily have now? Megan gives Emily 6*2=<<6*2=12>>12 marbles. Emily then has 6+12=<<6+12=18>>18 marbles. Emily gives Megan 18/2+1=<<18/2+1=10>>10 marbles. Emily has 18-10=<<18-10=8>>8 marbles now. #### 8 Jillian, Savannah, and Clayton were collecting shells on the beach. Jillian collected 29, Savannah collected 17, and Clayton collected 8. They decided that they wanted to give the shells to two of their friends who had just arrived. They put their shells together and distributed them evenly to each friend. How many shells did each friend get? The kids collected 29 + 17 + 8 = <<29+17+8=54>>54 shells. If they distribute the shells evenly between 2 friends, 54 / 2 = <<54/2=27>>27 shells for each friend. #### 27 The half-hour newscast includes 12 minutes of national news, 5 minutes of international news, 5 minutes of sports, and 2 minutes of weather forecasts. The rest is advertisements. How many minutes of advertising are in the newscast? 12+5+5+2=<<12+5+5+2=24>>24 minutes are accounted for. There are 30-24=<<30-24=6>>6 minutes of ads. #### 6 An amoeba reproduces by fission, splitting itself into two separate amoebae. An amoeba reproduces every two days. How many days will it take one amoeba to divide into 16 amoebae? The amoeba will divide into 1 * 2 = <<1*2=2>>2 amoebae after 2 days. The amoeba will divide into 2 * 2 = <<2*2=4>>4 amoebae after 4 days. The amoeba will divide into 4 * 2 = <<4*2=8>>8 amoebae after 6 days. The amoeba will divide into 8 * 2 = <<8*2=16>>16 amoebae after 8 days. #### 8 Chad saves 40% of the money he earns/receives in a year. This year, he made $600 mowing yards and received $250.00 for his birthday/holidays. He also made $150.00 by selling some old video games and another $150.00 doing odd jobs. How much will he save? He made $600.00 mowing yards, $250.00 for his birthday, $150.00 selling items and $150.00 doing odd jobs so he made 600+250+150+150 = $<<600+250+150+150=1150.00>>1,150.00 He made $1,150.00 and will save 40% so he saves 1150*.40 = $<<1150*.40=460.00>>460.00 #### 460 Fiona completed 36 math questions in an hour. Shirley was able to complete twice as many math questions within that same time, and Kiana completed half of the sum of Fiona and Shirley's math questions. If they each did the same number of questions the following hour, how many math questions did all three girls complete in 2 hours? Shirley completed 36 x 2 = <<36*2=72>>72 questions The sum of Fiona and Shirley's questions is 36 + 72 = <<36+72=108>>108 Kiana completed 108/2 = <<108/2=54>>54 questions In one hour, they completed 108 +54 = <<108+54=162>>162 questions. In two hours, they completed 162 x 2 = <<162*2=324>>324 questions. #### 324 Marcy's grade is electing their class president. Marcy got three times as many votes as Barry, who got twice as many as 3 more than the number of votes Joey got. If Joey got 8 votes, how many votes did Marcy get? First, add three to Joey's vote total: 8 votes + 3 votes = <<8+3=11>>11 votes Then double that number to find the number of votes Barry got: 11 votes * 2 = <<11*2=22>>22 votes Then triple that number to find Marcy's vote total: 22 votes * 3 = <<22*3=66>>66 votes #### 66 A year ago, the total cost of buying a lawnmower was 2/5 times less than the cost it goes for now. If the cost was $1800 a year ago, calculate how much it would cost Mr. Lucian to buy 4 such lawnmowers. If the price of a lawnmower was $1800 a year ago, 2/5 less than the cost right now, then it now costs 2/5*1800 = $720 more to buy one lawnmower. The total cost of buying one lawnmower right now is $1800+$720 = $<<1800+720=2520>>2520 To purchase 4 such lawnmowers, Mr. Lucian will have to pay $2520*4 = $<<2520*4=10080>>10080 #### 10080