It takes John 13 seconds to run 100 meters. He only goes 4 meters in the first second. He then maintains the same speed for the rest of the race. James is 2 m/s faster at the top speed and he can run the first 10 meters in 2 seconds. How long does it take James to run 100 meters?

John runs 100-4=

<<100-4=96>>96 meters once he reaches his max speed He runs it in 13-1=<<13-1=12>>12 seconds So he runs at a speed of 96/12=<<96/12=8>>8 m/s So that means James's top speed is 8+2=<<8+2=10>>10 m/s He has to run 100-10=<<100-10=90>>90 meters at his top speed So he runs that at 90/10=<<90/10=9>>9 seconds So he takes 9+2=<<9+2=11>>11 seconds to run 100 meters #### 11 Mark is 5 feet 3 inches tall and Mike is 6 feet and 1 inch tall. How much taller is Mike than Mark in inches if 1 foot is equal to 12 inches? Mark is (5*12) + 3 = <<5*12+3=63>>63 inches tall. Mike is (6*12) + 1 = <<6*12+1=73>>73 inches tall. Hence, Mike is 73 - 63 = <<73-63=10>>10 inches taller. #### 10 Nick hides 10 chocolates in his closet. His brother Alix hides 3 times as many chocolates than Nick hides. Last night, their mom found and took 5 chocolates from Alix. How many more chocolates does Alix have than Nick? Alix has 3 * 10 = <<3*10=30>>30 chocolates. After his mom took 5 chocolates, Alix has now 30 - 5 = <<30-5=25>>25 chocolate. So Alix has 25 - 10 = <<25-10=15>>15 chocolates more than Nick. #### 15 Gillian’s phone bill is usually $50 a month. If the monthly bill increases by 10%, what will be her phone bill for the entire next year? Her new monthly bill will be $50 * 110/100 = $<<50*110/100=55>>55. Her phone bill for the entire year will be $55 * 12 = $<<55*12=660>>660. #### 660 The number of students who wish to go on a skiing trip is twice as many as those who wish to go on a scavenger hunting trip. If there are 4000 students who wish to go on the scavenger hunting trip, how many students are there altogether? The number of students who wish to go on the skiing trip is 2 * 4000 students = <<2*4000=8000>>8000 students. The total number of students is 4000 students + 8000 students = <<4000+8000=12000>>12000 students. #### 12000 Lee wants to propose marriage to Sierra. He wants to follow the adage that you should spend two months' salary on the ring. He earns $60,000 per year in salary and can save $1000 per month. How long will it take before he can propose to Sierra? Lee currently earns $60,000 / 12 months = $<<60000/12=5000>>5,000 per month. The engagement ring will cost him 2 * $5,000 = $<<2*5000=10000>>10,000. This means that it will take Lee $10,000 / $1,000 = <<10000/1000=10>>10 months to save enough money before he can propose. #### 10 Henry needs to declutter his book collection of 99 books. From his bookshelf, he was able to fill 3 boxes of 15 books each to take to a donation center. He had 21 books in a room he could donate, 4 on his coffee table and 18 cookbooks stashed in the kitchen. When he dropped them off, he noticed a box of books that had a "free to a good home" note. He grabbed 12 books to take back to his place. How many books does Henry now have? He filled 3 boxes with 15 books each so 3*15 = <<3*15=45>>45 books From the rest of his house he is donating 45+21+4+18 = <<45+21+4+18=88>>88 books for donation His collection is 99 books and he is donating 88 books, so that leaves him with 99-88 = <<99-88=11>>11 books He picks up 12 books to add to his collection of 11 books so he now has 12+11 = <<12+11=23>>23 books #### 23 In a certain country store, there are three kinds of bottled drinks. A cola, which costs $3, a juice for $1.5, and water for $1 per bottle. One day the store was able to sell 15 bottles of cola, 25 bottles of water, and 12 bottles of juice. How much did the shop earn? 15 bottles of cola is a cost of 15 * 3 = $<<15*3=45>>45. 12 bottles of juice make up to 12 * 1.5 = $<<12*1.5=18>>18. As each of the 25 sold water bottles was $1, the shop made a total of 45 + 18 + 25 = $<<45+18+25=88>>88. #### 88 There are 12 inches to a foot. Blossom measures her room and finds that it is exactly 10 feet long in each direction. In square inches, what is the area of her room? First translate the feet to inches or 10 feet * 12 inches per foot = <<10*12=120>>120 inches. Then use length * width which is 120 * 120 = <<120*120=14400>>14400 square inches. #### 14400 Samuel is driving to San Francisco’s Comic-Con in his car and he needs to travel 600 miles to the hotel where he made a reservation. At first, he drives at 50 miles/hour for 3 hours straight, then he speeds up to 80 miles/hour for 4 hours. How far is he from the hotel? At first at 50 miles/hour he travels 50 miles/hours*3 hours=<<50*3=150>>150 miles. After that, he speeds up, traveling 80 miles/hours*4 hours= <<80*4=320>>320 miles. He travels a total of 150 miles+320 miles=<<150+320=470>>470 miles. He is 600–470=<<600-470=130>>130miles from the hotel. #### 130