A doctor needs to give medicine to a child, and he knows that he cannot give the same amount of medicine that he would give to an adult. The instructions say that for every kilogram of weight the child must be given 5 ml of medicine. The doctor knows that the child weighs 30 kilograms and that also the full dose has to be given in 3 equal parts. How many milligrams will each part of the dose be?

The total number of ml needed is 30 kg x 5 ml/kg =

<<30*5=150>>150 ml Each dose has to be 150 ml / 3 doses = <<150/3=50>>50 ml/dose #### 50 Barbara asked the butcher for 4 1/2 pound steaks that cost $15.00/pound. She also asked for a pound and half of chicken breasts that were $8.00 a pound. How much did she spend at the butchers? She ordered 4 1/2 pound steaks so that's 4*.5 = <<4*.5=2>>2 pounds of steak. The steak cost $15.00 a pound and she bought 2 pounds so that's 15*2 = $<<15*2=30.00>>30.00 for 4 steaks. She also needed 1.5 pounds of chicken breasts at $8.00 a pound so that's 1.5*8 = $<<1.5*8=12.00>>12.00 for chicken. The steaks cost $30.00 and the chicken cost $12.00 for a total of 30+12 = $<<30+12=42.00>>42.00 spent at the butchers. #### 42 42 raspberries, blackberries, and blueberries were picked in total. If half of all the berries had been raspberries, and a third of the berries were blackberries, how many of them were blueberries? 42/2 = <<42/2=21>>21 raspberries had been picked. 42/3 = <<42/3=14>>14 blackberries had been picked. 21+14 = <<21+14=35>>35 raspberries and blackberries had been picked. 42-35 = <<42-35=7>>7 blueberries had been picked. #### 7 Viggo's age was 10 years more than twice his younger brother's age when his brother was 2. If his younger brother is currently 10 years old, what's the sum of theirs ages? Twice Viggo's younger brother's age when his brother was 2 is 2*2 = <<2*2=4>>4 years. If Viggo's age was 10 more than twice his younger brother's age when his brother was 2, Viggo was 10+4 = 14 years old. Viggo is 14 years - 2 years = <<14-2=12>>12 years older than his brother Since Viggo's brother is currently 10 and Vigo is 12 years older, he's currently 10 + 12 = <<10+12=22>>22 years old Their combined age is 22 years + 10 years = <<22+10=32>>32 years #### 32 Jeff makes 10 donuts each day for 12 days. Jeff eats one of the donuts each day. Chris then comes over and eats 8 donuts. If 10 donuts fit in each box, how many boxes can Jeff fill with his donuts? Jeff makes a total of 10 * 12 = <<10*12=120>>120 donuts. Jeff eats 1 * 12 = <<1*12=12>>12 donuts. After Chris is done eating, there are 120 - 12 - 8 = <<120-12-8=100>>100 donuts remaining. Jeff needs 100 / 10 = <<100/10=10>>10 boxes to store all of his donuts. #### 10 8 jumbo scallops weigh one pound and cost $24.00 a pound. Nate is pairing 2 scallops with a corn bisque as a light summer dinner. He’s cooking for 8 people. How much will the scallops cost? He’s cooking for 8 people and wants to serve 2 scallops per person so he needs 8*2 = <<8*2=16>>16 scallops 8 jumbo scallops come in 1 pound and he needs 16 scallops so he will need 16/8 = <<16/8=2>>2 pounds of scallops A pound of scallops weigh $24.00 and he needs 2 pounds so it will cost him 24*2 = $<<24*2=48.00>>48.00 for scallops #### 48 Ben starts each day with $50, spends $15 every day and saves the rest. After a few days, his mom doubled his total savings and his dad gave him an additional $10. If he now has $500, How many days have elapsed? Let the number of days be x He saves $50-$15=$<<50-15=35>>35 each day After x days he had saved $35*x=$35x His mom doubled his savings to give $35x*2=$70x His dad added $10 to give $70x+$10=$500 Subtracting 10 from both sides of the equation formed gives $70x=490 Dividing both sides by $70 give x=7 days #### 7 The age of Gladys is equal to twice the sum of the ages of Billy and Lucas. Billy is 3 times younger than Gladys who is 30 years old now. How old will Lucas be three years from now? Billy's age is 30/3 = <<30/3=10>>10 years old. The sum of the ages of Billy and Lucas is 30/2 = <<30/2=15>>15. So, Lucas is 15 - 10 = <<15-10=5>>5 years old now. Therefore, Lucas will be 5 + 3 = <<5+3=8>>8 years old three years from now. #### 8 Perry, Dana, Charlie, and Phil played golf together every week. At the end of the season, Perry had won five more games than Dana, but Charlie had won 2 games fewer than Dana. Phil had won 3 games more than Charlie did. If Phil won a total of 12 games, how many more games did Perry win than did Phil? If Phil had won 3 games more than did Charlie, and Phil won 12 games, then Charlie won 12-3=<<12-3=9>>9 games. If Charlie had won 2 games fewer than Dana, and Charlie won 9 games, then Dana won 9+2=<<9+2=11>>11 games. If Perry had won five more games than did Dana, and Dana won 11 games, then Perry won 11+5=<<11+5=16>>16 games. Thus, Perry won 16-12=<<16-12=4>>4 more games than did Phil. #### 4 Jill spends time every day talking to her boyfriend on the phone. The first day of the week she spends 5 minutes on the phone with her boyfriend. Each of the following days she spends twice as much time talking on the phone as the day before. After the 5th day her parents take the phone away from her because she was on it too long. How much time did Jill spend talking to her boyfriend that week? Jill starts off spending 5 minutes on the phone, and the following day she spends double that 5 minutes for 5*2=<<5+5=10>>10 minutes. The following day Jill spends double the previous day's total of 10 minutes on the phone, for 10*2=<<10*2=20>>20 minutes. On the fourth day, Jill spends double the previous day's total of 20 minutes on the phone, for 20*2=<<20*2=40>>40 minutes On the fifth and final day, Jill spends double the previous day's total of 40 minutes on the phone, for 40*2=<<40*2=80>>80 minutes. All told, Jill spends 5+10+20+40+80= <<5+10+20+40+80=155>>155 minutes on the phone over 5 days. #### 155