Janeth bought 5 bags of round balloons with 20 balloons in each bag. She also bought 4 bags of long balloons with 30 balloons in each bag. While blowing up the balloons, 5 round balloons burst. How many balloons are left?

Janeth bought 5 x 20 =

<<5*20=100>>100 round balloons. She bought 4 x 30 = <<4*30=120>>120 long balloons. So, she has a total of 100 + 120 = <<100+120=220>>220 balloons. Since 5 round balloons burst, then there are only 220 - 5 = <<220-5=215>>215 balloons left. #### 215 Kira wants some new music on her phone. She downloads 10 songs in the morning. Later on that day, she finds 15 more songs she likes so she downloads them, and at night a friend of hers recommends 3 more songs she also downloads. Knowing that each song has a size of 5 MB, how much memory space in MB will the new songs occupy? The total number of songs downloaded is 10 songs + 15 songs + 3 songs = <<10+15+3=28>>28 songs The total size of the songs is 28 songs x 5MB/song = <<28*5=140>>140 MB #### 140 Elijah is painting his living room and decides to buy masking tape to make his painting neater. 2 of his walls are 4 meters wide and the other 2 walls are 6 meters wide. Elijah needs enough masking tape to cover the entire width of each wall and can order the exact amount of masking tape he needs. How many meters of masking tape does Elijah need to order? For 2 of the walls, Elijah will need 2 walls * 6 meters each = <<2*6=12>>12 meters of masking tape. For the other 2 walls, he will need 2 walls * 4 meters each = <<2*4=8>>8 meters of masking tape. He will therefore need a total of 12 + 8 = <<12+8=20>>20 meters of masking tape. #### 20 Janet buys 3 pounds of broccoli for $4 a pound, 3 oranges for $0.75 each, a cabbage for $3.75, a pound of bacon for $3, and two pounds of chicken for $3 a pound. What percentage of her grocery budget did she spend on meat, rounded to the nearest percent? First find the total cost of the broccoli: 3 pounds * $4/pound = $<<3*4=12>>12 Then find the total cost of the oranges: 3 oranges * $0.75/orange = $<<3*0.75=2.25>>2.25 Then find the total cost of the vegetables: $12 + $2.25 + $3.75 = $<<12+2.25+3.75=18>>18 Then find the total cost of the chicken: $3/pound * 2 pounds = $<<3*2=6>>6 Then add the cost of the bacon to find the total cost of the meat: $6 + $3 = $<<6+3=9>>9 Then add the cost of the meat and vegetables to find the total cost of the groceries: $9 + $18 = $<<9+18=27>>27 Then divide the cost of the meat by the total grocery bill and multiply by 100% to express the answer as a percentage: $9 / $27 * 100% = 33.333%, which rounds down to 33% #### 33 Jacob is trying to eat less than 1800 calories a day. If he eats 400 calories for breakfast, 900 calories for lunch, and 1100 calories for dinner, how many more calories did he eat than he planned? First add up the calories from all three meals: 900 + 400 + 1100 = <<900+400+1100=2400>>2400 Then subtract Jacob's goal from the number of calories he actually ate: 2400 - 1800 = <<2400-1800=600>>600 #### 600 24 gallons per second of water flows down a waterfall. If you have an empty basin that can hold 260 gallons of water. The basin leaks water at 4 gallons per second. how long would it take to fill the basin with water from the waterfall in seconds? 24 gallons in minus 4 gallons out is 24-4=<<24-4=20>>20 gallons per second 260 gallons divided by 20 gallons per second 260/20 = <<260/20=13>>13 seconds #### 13 $240 was divided between Kelvin and Samuel. Samuel received 3/4 of the money. From his share, Samuel then spent 1/5 of the original $240 on drinks. How much does Samuel have left? Samuel received 3/4 of $240, which is $240*(3/4) = $<<240*3/4=180>>180 He spent 1/5 of $240, which is $240*(1/5) = $<<240*(1/5)=48>>48 He spent this amount from his own share, so he has $180-$48 = $<<180-48=132>>132 left. #### 132 There are 120 cards in a box. If 2/5 of the cards are red, exactly 5/9 of the remainder are black, and the rest are green, calculate the number of green cards in the box? The number of red cards in the box, 2/5 of the total number, is 2/5*120 = <<2/5*120=48>>48. The number of cards that are not red is 120-48 = <<120-48=72>>72. If 5/9 of the remaining cards are black, then there are 5/9*72 = <<5/9*72=40>>40 black cards in the box. If the remaining cards are green, then there are 72-40 = <<72-40=32>>32 green cards in the box. #### 32 Jackson and Brandon both invest $500 in the stock market. Jackson's investment quadruples in value, while Brandon's is reduced to 20% of the initial value. How much more money does Jackson have than Brandon now? First find the end value of Jackson's investment: $500 * 4 = $<<500*4=2000>>2000 Then find the end value of Brandon's investment: 20% * $500 = $<<20*.01*500=100>>100 Then subtract the value of Brandon's investment from the value of Jackson's investment to find the difference: $2000 - $100 = $<<2000-100=1900>>1900 #### 1900 Yulia was able to net $44 in profit this week. Her lemonade stand made a gross revenue of $47 this week. She was also able to babysit and made $31. However, her lemonade stand is expensive to run because she needs to buy lemons, sugar, and sunscreen. How much did she spend to operate her lemonade stand, in dollars? Yulia's total gross revenue was $47 + $31 = $<<47+31=78>>78. To calculate her overhead we must subtract her total profit from her gross revenue which is $78 - $44 = $<<78-44=34>>34. #### 34