A wildlife team is monitoring the number of birds in a park. There are 3 blackbirds in each of the park’s 7 trees. There are also 13 magpies roaming around the park. How many birds are in the park in total?

In the trees, there are 7 trees * 3 blackbirds per tree =

<<7*3=21>>21 blackbirds. In addition to the magpies, there is a total of 21 blackbirds + 13 magpies = <<21+13=34>>34 birds in the park. #### 34 Mr. Fortchaud turns on his heater on the 1st of November, 2005. The fuel tank was then full and contained 3,000 L. On January 1, 2006, the tank counter indicated that 180 L remained. Mr. Fortchaud again filled his tank completely. On 1 May 2006, Mr. Fortchaud decided to stop heating and he read 1,238 L on the meter. What the volume of fuel oil that was used between 1 November 2005 and 1 May 2006? I calculate consumption between November 1, 2005 and January 1, 2006: 3,000 – 180 = <<3000-180=2820>>2820 L I calculate consumption between January 1, 2006 and May 1, 2006: 3,000 – 1238 = <<3000-1238=1762>>1762 L I calculate the total consumption between November 1st and May 1st: 2,820 + 1,762 = <<2820+1762=4582>>4582 L #### 4,582 Sebastian bought art exhibit tickets for his parents and himself. Tickets were $44 per person. He was also charged an $18 service fee for the online transaction. What is the total amount he paid for the tickets? Tickets for Sebastian and his parents cost $44 x 3 = $<<44*3=132>>132. Tickets and service charge cost $132 + $18 = $<<132+18=150>>150. #### 150 Sidney has 4 kittens and 3 adult cats. She has 7 cans of cat food. Each adult cat eats 1 can of food per day. Each kitten eats 3/4 of a can per day. How many additional cans of food does Sidney need to buy to feed all of her animals for 7 days. Sidney has 3 adult cats * 1 can of food = <<3*1=3>>3 cans of food per day. Sidney's adult cats will need 3 cans * 7 days = <<3*7=21>>21 cans for the week. Sidney has 4 kittens * 3/4 cup of food = <<4*3/4=3>>3 cans of food per day. Sidney's kittens will need 3 cans * 7 days = <<3*7=21>>21 cans for the week. Sidney will need to buy 21 cans + 21 cans - 7 cans = <<21+21-7=35>>35 cans. #### 35 The capacity of Karson's home library is 400 books. If he currently has 120 books, how many more books does he have to buy to make his library 90% full? When 90% full, Karson's library holds 90/100*400 = <<90/100*400=360>>360 books. If he has 120 books in the library now, he needs to buy 360-120 = <<360-120=240>>240 books to make his library 90% full. #### 240 A bar of chocolate is made up of 60 pieces. If Michael takes half of the bar, Paige takes half of the remainder, and Mandy is left with what’s left of the chocolate bar, how many pieces of chocolate will Mandy get? Michael takes half which is 60 pieces / 2 = <<60/2=30>>30 pieces. Paige then takes half of this which gives her 30 pieces / 2 = <<30/2=15>>15 pieces. Mandy is therefore left with 60 pieces – 30 pieces – 15 pieces = <<60-30-15=15>>15 pieces. #### 15 There were three jars of candy in the cabinet. The jar of peanut butter candy had 4 times as much candy as the jar of grape candy. The jar of grape candy had 5 more pieces of candy than the jar of banana candy. How many pieces of candy did the peanut butter jar have if the banana jar had 43? The grape jar had 43+5 = <<43+5=48>>48 pieces of candy. The peanut butter jar had 48*4 = <<48*4=192>>192 pieces of candy. #### 192 James orders an 8 piece pizza. His friend eats 2 slices and James eats half of what is left. How many slices does James eat? There are 8-2=<<8-2=6>>6 slices left after his friend eats some slices That means So he eats 6/2=<<6/2=3>>3 slices #### 3 Mr. Bodhi is transporting some animals using a yacht across a river. He has 20 cows, 15 foxes and three times as many zebras as foxes. To balance the yacht to ensure a smooth sail across the river, the total number of animals in the yacht needs to be 100. If he decides to add sheep to the yacht to make the yacht sail-worthy, how many sheep did he add to the yacht? The number of cows and foxes in the yacht is 20+15 = <<20+15=35>>35 Mr. Bodhi also has three times as many zebras as foxes in the yacht, equal to 3*15 = <<3*15=45>>45 zebras. The number of animals in the yacht so far is 35+45 = <<35+45=80>>80 To balance the yacht, Mr. Bodhi needs to add 100-80= <<100-80=20>>20 sheep #### 20 Stan hires a magician for $60 an hour. He works 3 hours every day for 2 weeks. How much money does he pay the magician? The magician works for 2*7=<<2*7=14>>14 days So the magician works 14*3=<<14*3=42>>42 hours So that means he pays 42*60=$<<42*60=2520>>2520 #### 2520