Boris has 24 books and he donates a fourth of his books to the library. Cameron has 30 books and he donates a third of his books to the library. After donating their books, how many books in total do Boris and Cameron have together?

Boris donates 24 / 4 =

<<24/4=6>>6 books Then Boris has a total of 24 - 6 = <<24-6=18>>18 books Cameron donates 30 / 3 = <<30/3=10>>10 books Then Cameron has a total of 30 - 10 = <<30-10=20>>20 books Altogether, Boris and Cameron have 18 + 20 = <<18+20=38>>38 books #### 38 Kevin has a tree growing in his garden that is currently 180 inches tall. That is 50% taller than it was when he planted it there. How tall was the tree, in feet, then? Since it is 50% taller, then 180 inches is 100% + 50% = 150% of its height then. So each 1% is equal to 180/150 = <<180/150=1.2>>1.2 inches. So, its height then was 1.2 x 100% = 120 inches. Since 1 foot is equal to 12 inches, then 120 inches is equal to 120/12 = <<120/12=10>>10 feet. #### 10 Marcus had 18 pebbles. He skipped half of them across the lake, but Freddy gave him another 30 pebbles. How many pebbles does Marcus have now? Marcus had 18/2 = <<18/2=9>>9 pebbles left. After Freddy gave him more, he has 9 + 30 = <<9+30=39>>39 pebbles. #### 39 Company A and Company B merge. Company A receives 60% of the combined profits under the new merger, and company B receives 40% of the profits. If company B gets a total of $60000 in profit, how much does company A get? Let the total profit of both companies be denoted by x. Therefore, 40% * x = 0.4 * x = $60000 So x = $60000 / 0.4 = $150000. If Company B gets 60 % of the profits, it gets 60% of $150000, which is 0.6 * $150000 = $<<0.6*150000=90000>>90000. #### 90000 Musa is the class teacher of a class of 45 students. He wants to split them into three groups by age. If a third of the class is under 11 years, and two-fifths are above 11 but under 13, how many students will be in the third group (13 years and above)? The first group is a third of the class which is (1/3)*45 = <<1/3*45=15>>15 students There are 15 students in the first group, so there are 45-15 = <<45-15=30>>30 students The second group is two-fifths of the class which is (2/5)*45 = <<2/5*45=18>>18 students There are 18 in the second group so there are 30-18 = <<30-18=12>>12 students left in the third group #### 12 It took Dad 5 more than twice as long to vacuum upstairs then to vacuum downstairs. He vacuumed for a total of 38 minutes. How many minutes did he vacuum upstairs? Let D = time in minutes to vacuum downstairs Upstairs = 2D + 5 minutes 3D + 5 = 38 3D = 33 D = <<11=11>>11 minutes Upstairs = (2 * 11) + 5 = <<(2*11)+5=27>>27 minutes Dad took 27 minutes to vacuum upstairs. #### 27 Ryan wants to take 5 peanut butter sandwiches to the beach. If each sandwich consists of 3 slices of bread how many slices does Ryan need to make 5 sandwiches? To make 1 sandwich, you need 3 slices so Ryan needs 1*3= <<1*3=3>>3 slices to make one sandwich. Since it takes 3 slices to make a sandwich, and Ryan wants 5 sandwiches to take to the beach he needs 3*5= <<3*5=15>>15 slices. #### 15 Max fills up water balloons for 30 minutes at a rate of 2 water balloons every minute. Max’s friend Zach fills up water balloons for 40 minutes at a rate of 3 water balloons every minute. In the process, 10 of the water balloons pop on the ground. How many filled water balloons do Max and Zach have in total? Max fills 30 * 2 = <<30*2=60>>60 water balloons Zach fills 40 * 3 = <<40*3=120>>120 water balloons Max and Zach have a total of 60 + 120 - 10 = <<60+120-10=170>>170 water balloons #### 170 Josh found out that 7 bottle caps weigh exactly one ounce. Josh's entire bottle cap collection weighs 18 pounds exactly. How many bottle caps does Josh have in his collection? Josh's collections weights 18 * 16 = <<18*16=288>>288 ounces. Josh's collection contains 288 * 7 = <<288*7=2016>>2016 caps #### 2016 Tapanga and Corey have 66 candies together. However, Tapanga has 8 more candies than Corey. How many candies does Corey have? Let x = the total number of candies Corey has. x + 8 = the total number of candies Tapanga has. The equation for the total number of candies is x + (x + 8) = 66 Combining like terms, we get 2x + 8 = 66 Subtracting 8 from both sides, we get 2x = 58 Dividing both sides by 2, we get x = <<29=29>>29, so Corey has 29 candies. #### 29