Renaldo drove 15 kilometers. Ernesto drove 7 kilometers more than one-third of Renaldo's distance. How many kilometers did the 2 men drive in total?

How far did Renaldo drive? ** Renaldo =

<<15=15>>15 km How far did Ernesto drive? ** Ernesto = (1/3) * 15 + 7 = <<(1/3)*15+7=12>>12 km How far did Renaldo and Ernesto drive? ** Total = 15 + 12 = <<27=27>>27 km How many kilometers did Renaldo and Ernesto drive? ** Renaldo and Ernesto drove a total of 27 kilometers. #### 27 Ofelia joined a saving challenge wherein she has to save twice the amount she saved from the previous month. In January, she saved $10. How much is she going to save in May? How much does Ofelia save in February? ** Ofelia saves $10 x 2 = $<<10*2=20>>20 in February. How much does Ofelia save in March? ** She will save $20x 2 = $<<20*2=40>>40 in March. How much does Ofelia save in April? ** She will save $40 x 2 = $<<40*2=80>>80 in April. How much does Ofelia save in May? ** Thus, she will save $80 x 2 = $<<80*2=160>>160 in May. #### 160 Class A is twice as big as Class B. Class A is also a third the size of Class C. If Class B has 20 people in it, how many people are in Class C? How many people are in Class A? ** Class A is twice the size of Class B, so Class A = 2 * size of Class B How many people are in Class A? ** If Class B has 20 people Class A has 20 * 2 = <<20*2=40>>40 people How many people are in Class A? ** Since Class A is also 1/3 the size of Class C then Class A = 1/3 * Class C How many people are in Class A? ** This means 40 = 1/3 * Class C How many people are in Class C? ** Thus the size of Class C is 3 * 40 = <<3*40=120>>120 people #### 120 On a farm, there are 2 cows, 3 pigs, and 6 goats. The farmer planned on adding 3 cows, 5 pigs, and 2 goats. How many animals will there be on the farm? How many animals are there currently? ** Currently, the farm has 2 + 3 + 6 = <<2+3+6=11>>11 animals. How many animals will the farmer add? ** The farmer will add 3 + 5 + 2 = <<3+5+2=10>>10 animals. How many animals will there be on the farm? ** So, the farm will have 11 + 10 = <<11+10=21>>21 animals. #### 21 Ross takes 17 breaths per minute by inhaling 5/9 liter of air to his lungs. What is the volume of air inhaled in 24 hours? How many minutes are in an hour? ** We have 60 minutes per hour. How many minutes are in 24 hours? ** So, in 24 hours we have 60 * 24 = <<60*24=1440>>1440 minutes. How many liters of air did Ross inhale in 24 hours? ** So, the volume of air Ross inhaled in 24 hours is: 17 breaths/minute * 5/9 L/breath * 1440 minutes = 122400 / 9 = <<17*5/9*1440=13600>>13600 liters. What is the volume of air inhaled in 24 hours? ** The volume of air inhaled is 13600 liters. #### 13600 Caprice is taking piano lessons. Her mother pays the teacher $10 for every half-hour of teaching her daughter. If Caprice is taking one lesson per week, and the lesson lasts 1 hour, how much money would the teacher earn in 5 weeks? How much does a one-hour lesson cost? ** If half-hour lesson is worth $10, then a one-hour lesson costs 2 * 10 = $<<10*2=20>>20. How much money would the teacher earn in 5 weeks? ** One lesson per week would mean that in 5 weeks the teacher would earn 20 * 5 = $<<20*5=100>>100. #### 100 Quinton is looking to add 4 fruit trees to his backyard. He wants to plant 2 apple trees that will be 10 feet wide each and need 12 feet between them. The peach trees will be closer to the house and will grow to be 12 feet wide and will need 15 feet between each tree. All told, how much space will these trees take up in his yard? How wide will the apple trees be? ** Both apple trees will be 10 feet wide at maturity so they will be 2*10 = <<10*2=20>>20 feet wide How much space will the apple trees take up? ** Quinton will need to leave 12 feet between these 2 trees so the apple trees will take up 20+12 = 32 feet How wide will the peach trees be? ** Both peach trees will be 12 feet wide at maturity so they will be 2*12 = <<12*2=24>>24 feet wide How much space will the peach trees take up? ** Quinton will need to leave 15 feet between these 2 trees so the peach trees will take up 24+15 = 39 feet How much space will the trees take up? ** Together, the apple trees will take up 32 feet and the peach trees will take up 39 feet so they will take 32+39 = <<32+39=71>>71 feet #### 71 Two puppies, two kittens, and three parakeets were for sale at the pet shop. The puppies were three times more expensive than the parakeets, and the parakeets were half as expensive as the kittens. If the cost of one parakeet was $10, what would it cost to purchase all of the pets for sale at the pet shop, in dollars? How much do the puppies cost? ** Puppies cost three times more than parakeets, or 3*$10=$<<3*10=30>>30 per puppy. How much do the parakeets cost? ** Parakeets were half as expensive as the kittens, or 2*$10=$<<2*10=20>>20 per kitten. How much do the puppies cost? ** Two puppies cost 2*$30=$<<2*30=60>>60 How much do the kittens cost? ** Two kittens cost 2*$20=$<<2*20=40>>40. How much do the parakeets cost? ** And three parakeets cost 3*$10=$<<3*10=30>>30. How much does it cost to purchase all of the pets for sale at the pet shop? ** Thus, the cost to purchase all of the pets for sale at the pet shop is $60+$40+$30=$<<60+40+30=130>>130. #### 130 Marcus, Humphrey, and Darrel are bird watching. Marcus sees 7 birds, Humphrey sees 11 birds, and Darrel sees 9 birds. How many birds does each of them see on average? How many birds do Darrel, Humphrey, and Marcus see? ** They see 27 total birds because 9 +11 + 7 = <<9+11+7=27>>27 How many birds do Darrel, Humphrey, and Marcus see on average? ** They see an average of 9 birds each because 27 / 3 = <<27/3=9>>9 #### 9 In five years Sam will be 3 times as old as Drew. If Drew is currently 12 years old, how old is Sam? How old will Drew be in five years? ** In five years Drew will be 12+5=<<12+5=17>>17 years old. How old will Sam be in five years? ** In five years Sam will be 3(17)=51 years old. How old is Sam currently? ** Sam is currently 51-5=<<51-5=46>>46 years old. #### 46