Joy has 30 pencils, and Colleen has 50 pencils. If they bought the pencils at $4 each at the store, how much more money did Colleen pay than Joy for her pencils?

The number of pencils that Colleen has more than Joy is 50-30 =

<<50-30=20>>20 pencils. If each pencil was sold at $4 each, Colleen paid $4*20 = $<<4*20=80>>80 more for the 20 extra pencils she has more than Joy. #### 80 Josh has 85 marbles. There are three times as many blue marbles as red while the rest are yellow. If there are 14 red marbles, how many yellow marbles are there? There are 14 x 3 = <<14*3=42>>42 blue marbles. The total number of blue and red marbles is 42 + 14 = <<42+14=56>>56. There are 85 - 56= <<85-56=29>>29 yellow marbles. #### 29 The bowling alley has 30 red bowling balls. There are 6 more green bowling balls than red. How many bowling balls are there in total? There are 30 + 6 = <<30+6=36>>36 green bowling balls In total there are 30 + 36 = <<30+36=66>>66 bowling balls #### 66 Megan is making food for a party. She has to spend 20 minutes preparing one dish in the oven. Each dish can feed 5 people. She spends 2 hours preparing as many of these dishes as she can for the party. How many people can she feed with these dishes? First, we need to determine the total amount of minutes available for cooking. We do this by performing 2*60=<<2*60=120>>120, as there are 60 minutes in an hour. Now that we know we have 120 minutes, we then divide the preparation time into the total amount of time by performing 120/20= <<120/20=6>>6 dishes capable of being made. Since each dish can feed 5 people, we find the total number of people fed by performing 5*6=<<5*6=30>>30 people. #### 30 All of the beads in Sue's necklace are either purple, blue, or green. If Sue has 7 purple beads, twice as many blue beads as purple beads, and 11 more green beads than blue beads, how many beads are in the necklace? Twice as many blue beads as purple beads in the necklace are 2*7 = <<2*7=14>>14 beads. Sue also has 11 more green beads than blue beads, a total of 14+11 = 25 beads. The necklace has 7 purple + 14 blue + 25 green = <<7+14+25=46>>46 beads. #### 46 Anna has 50 pencils and Harry has twice the number of Anna’s Pencils but he lost 19 of them. How many pencils are left with Harry? The number of Harry’s pencils is 50 * 2 = <<50*2=100>>100 pencils. The number pencils left is 100 – 19 = <<100-19=81>>81 pencils. #### 81 Alan likes to support music creators, so instead of downloading songs from the internet, he visits a record store once in a while. He decided now to buy 2 CDs by "The Dark", 1 CD by the creator "AVN", and 5 CDs that are mixes of songs from the 90s. The price of the "AVN" CD is $12 and it is half the price of one CD by "The Dark". The 5 CDs of 90s music cost is 40% of all the cost of all other CDs Alan is going to buy. How much will Alan have to pay for all the products? If one "AVN" is half the price of one "The Dark" CD, that means one CD of "The Dark" costs 12 * 2 = $<<12*2=24>>24. So for two "The Dark" CDs, Alan needs to pay 24 * 2 = $<<24*2=48>>48. So all CDs cost by now 12 + 48 = $<<12+48=60>>60. The 90s music CDs cost 40/100 * 60 = $<<40/100*60=24>>24. That means for all CDs Alan needs to pay 60 + 24 = $<<60+24=84>>84. #### 84 Michael has 36 pets. 25% of them are dogs, 50% are cats, and the rest are bunnies. How many bunnies does he have? 25% of his pets are bunnies because 100% - 50% - 25% = 25% He has 9 bunnies because 36 x .25 = <<36*.25=9>>9 #### 9 Tabitha has 25 dollars. She gives her mom 8 dollars and invests half what is left in a money market. She spends some money on 5 items that costs 50 cents each. How much money does Tabitha have left? Tabitha has 25-8 = <<25-8=17>>17 dollars after giving some to her mom. Tabitha has 17/2 = <<17/2=8.5>>8.5 dollars left after putting some in a money market. The 5 items Tabitha buys totals out to 5*0.5 = <<5*0.5=2.50>>2.50 dollars. Tabitha has 8.5-2.5 = <<8.5-2.5=6>>6 dollars left. #### 6 Mia can decorate 2 dozen Easter eggs per hour. Her little brother Billy can only decorate 10 eggs per hour. They need to decorate 170 eggs for the Easter egg hunt. If they work together, how long will it take them to decorate all the eggs? Working together, they can decorate 24 + 10 = <<24+10=34>>34 eggs per hour. It will take them 170 / 34 = <<170/34=5>>5 hours to decorate all of the eggs. #### 5