Answer this question:Tom can type 90 words a minute. A page is 450 words. How long would it take him to type out 10 pages?
He can type out 1 page in 450 / 90 = 5 minutes. So it would take 5 * 10 = 50 minutes.
The answer is 50.

Answer this question:Bob, a marathon runner, is preparing for a race. He runs a total of 70 miles in the 3 days leading up to the race. On day one he runs 20 percent of the total miles and on day 2 he runs 50 percent of the remaining miles. How many miles does he run on day three to complete the 70 miles?
Day 1: 70(.20) = 14 miles. 70 - 14 = 56 miles remaining. Day 2:56 / 2 = 28 miles. 56 - 28 = 28 miles remaining.
The answer is 28.

Answer this question:Hot dog buns come in packages of 8. For the school picnic, Mr. Gates bought 30 packages of hot dog buns. He has four classes with 30 students in each class. How many hot dog buns can each of Mr. Gates' students get?
Mr. Gates bought 30 x 8 = 240 hot dog buns. In his four classes, he has a total of 4 x 30 = 120 students. Therefore, each of his students can get 240 / 120 = 2 hot dog buns.
The answer is 2.

Answer this question:Lucy lost one-third of her money. She then spent one-fourth of the remainder, and only left with $15. How much money did Lucy have at the beginning?
The $15 is 1 - 1 / 4 = 3 / 4 of the money left. Since 3 / 4 is equal to $15, then 1 / 4 is equal to $15 / 3 = $5. So Lucy had $5 x 4 = $20 left after losing 1 / 3 of her money. Hence, $20 is 1 - 1 / 3 = 2 / 3 of the money that Lucy had at the beginning. Since 2 / 3 is equal to $20, then 1 / 3 is equal to $20 / 2 = $10. Therefore, Lucy had $10 x 3 = $30 at the beginning.
The answer is 30.