Question: John can read a book 60% faster than his brother. If his brother takes 8 hours to read a book, how long would it take John to read 3 books?
Answer with step-by-step thinking: Reading 60% faster means John's brother takes 1 + .6 = 1.6 times as long as John to read. So John reads a book in 8 / 1.6 = 5 hours. So it would take John 5 * 3 = 15 hours to read 3 books.
So the answer is 15.


Question: There are 100 students in class and the ratio of boys to girls is 3:2. How many more boys than girls are there?
Answer with step-by-step thinking: The class was divided into 3 + 2 = 5 parts. So each part is equal to 100 / 5 = 20 students. Since there are 3 parts for boys, then there are 20 x 3 = 60 boys in class. So there are 100 - 60 = 40 girls in class. Hence, there are 60 - 40 = 20 boys more than girls.
So the answer is 20.


Question: Mr. Alonzo harvested 245.5 kg of tomatoes. He sold 125.5 kg to Mrs. Maxwell and 78 kg to Mr. Wilson. How many kilograms of tomatoes are not sold?
Answer with step-by-step thinking:
Mr. Alonzo was able to sell 125.5 + 78 = 203.5 kg of tomatoes. So, there are 245.5 - 203.5 = 42 kg unsold tomatoes.
So the answer is 42.