Chuck can ride the merry-go-round 5 times longer than Dave who can only ride it for 10 minutes before getting sick. Erica can stay on the merry-go-round 30% longer than Chuck before getting sick. How long can Erica stay on the merry-go-round?

Dave can ride the merry-go-round for 10 minutes and Chuck can ride 5 times longer than Dave so he can ride for 10*5 =

<<10*5=50>>50 minutes Erica can stay on 30% longer than Chuck who can ride for 50 minutes so that's an extra .30*50 = <<30*.01*50=15>>15 minutes Chuck can ride for 50 minutes and Erica can ride an extra 15 minutes for a total of 50+15 = <<50+15=65>>65 minutes #### 65 Papi Calot prepared his garden to plant potatoes. He planned to plant 7 rows of 18 plants each. But he still has a bit of room left, so he’s thinking about adding 15 additional potato plants. How many plants does Papi Calot have to buy? Let’s first calculate the number of plants that Papi had planned: 7 rows * 18 plants/row = <<7*18=126>>126 plants Now let’s add the other plants: 126 plants + 15 plants = <<126+15=141>>141 plants. So Papi has to buy 141 plants. #### 141 Hendricks buys a guitar for $200, which is 20% less than what Gerald bought the same guitar for. How much did Gerald pay for his guitar? Let G be the price Gerald paid for his guitar. Then 0.8 * G = $200 So G = $200 / 0.8 = $<<200/0.8=250>>250 #### 250 Lyle wants to buy himself and his friends a sandwich and a pack of juice. A sandwich costs $0.30 while a pack of juice costs $0.2. If Lyle has $2.50, how many of his friends can have a sandwich and a pack of juice? A sandwich and a pack of juice cost $0.3 + $0.2 = $<<0.3+0.2=0.50>>0.50. With Lyle's $2.50, he can buy $2.50/$0.50 = <<2.5/0.5=5>>5 sets of sandwiches and juice. Therefore, 5 - 1 = <<5-1=4>>4 of his friends can have a sandwich and a pack of juice since the other 1 set is for Lyle himself. #### 4 Our small city has two buses. Each bus can have a capacity of 1/6 as much as the train, which has a capacity of 120 people. What is the combined capacity of the two buses? Every bus has a capacity of: 120 * 1/6 = <<120*1/6=20>>20 people. Combined, both the buses have a capacity of 20 * 2= <<20*2=40>>40 people. #### 40 Hannah bought 3 sweatshirts and 2 T-shirts. Each sweatshirt cost 15$ and each t-shirt cost 10$. How much money did Hannah spend in all? 3 sweatshirts cost 3 x 15 = <<3*15=45>>45$ 2 t-shirts cost 2 x 10 =<<2*10=20>>20 $ In total Hannah spent 45 + 20 = <<45+20=65>>65$ #### 65 The world record for longest fingernails is 26 inches. Sandy, who just turned 12 this month, has a goal for tying the record. Her fingernails are 2 inches long. Her fingernails grow at a rate of one-tenth of an inch per month. How old will she be when she achieves the world record? Sandy's fingernails will grow a total of ( 0.1 ) * 12 = <<(0.1)*12=1.2>>1.2 inches per year. To achieve the world record, Sandy needs to grow her fingernails a total of 26 - 2 = <<26-2=24>>24 inches. It will take her a total of 24 / 1.2 = <<24/1.2=20>>20 years. Sandy will be 12 + 20 = <<12+20=32>>32 years old when she achieves the world record. #### 32 Koby and Cherie want to light fireworks. Koby has bought 2 boxes of fireworks while Cherie has just 1 box of fireworks. Koby’s boxes each contain 3 sparklers and 5 whistlers. Cherie’s box has 8 sparklers and 9 whistlers. In total, how many fireworks do Koby and Cherie have? Each of Koby’s boxes contain 3 sparklers + 5 whistlers = <<3+5=8>>8 fireworks. So in total, Koby has 2 boxes * 8 fireworks per box = <<2*8=16>>16 fireworks. Cherie’s box of fireworks has 8 sparklers + 9 whistlers = <<8+9=17>>17 fireworks. Koby and Cherie therefore have a combined total of 16 fireworks from Koby + 17 fireworks from Cherie = <<16+17=33>>33 fireworks. #### 33 Roberta takes $158 with her on a shopping trip to the mall. She spends $45 on new shoes, $17 less on a new bag, and a quarter of the price of the bag for lunch. How much money does she have left after these purchases? Roberta's bag costs $45 - $17 = $<<45-17=28>>28. Roberta spend $28 / 4 = $<<28/4=7>>7 on lunch. Roberta spend 45 + 28 + 7 = <<45+28+7=80>>80 in total. Roberta has $158 - 80 = $<<158-80=78>>78 left. #### 78 It's payday but Jebb has to pay 10% for the tax. If his pay is $650, how much is his take-home pay? Jebb has to pay $650 x 10/100 = $<<650*10/100=65>>65. Therefore, Jebb's take-home pay is $650 - $65 = $<<650-65=585>>585. #### 585