Math Riddles Page 19 of 26
Math problems and math riddles, some of these are hard math problems and some are easy math problems, it depends on your math knowledge.
181. A cyclist takes 2 minutes and 13 seconds for every full lap of a circuit. Answer the following question in 10 seconds or less: How long will it take him to do 60 laps?
182. Find a number whose double exceeds its quarter by 7?
183. One hose fills a swimming pool six times faster than a second hose. Together they can fill the poll in five hours. How long would it take the slower hose to fill the pool by itself?
184. A mixed packet of nuts contains 1 pound of walnuts and 2 pounds of Brazil nuts. It costs exactly $2. A packet containing 4 pounds of filberts and 1 pound of walnuts costs $3. And for only $1.50, you can buy a mixed packet of 3 pounds of almonds, 1 pound of walnuts, and 1 pound of filberts. How much should you pay for a mixture of 1 pound of each of the four kinds of nuts?
185. We know that 5 squared = 25. Can you use the numbers 2 and 5 once and only once and any math sign or symbol to arrive at 25 a different way?
186. What are the next 2 numbers in this series:
1 4 13 28 49 _ _
187. Two slow moving trains are traveling towards each other. One train runs from point A to point B at 19 miles an hour. The other train runs from point B to point A at 21 miles per hour. One hour before the trains pass each other, how far apart are they?
188. If it takes 6 florist's assistants 3 hours to pack 12 boxes of flowers, how fast can sixteen assistants pack 16 boxes?
189. What is 1/2 of 1/4 of 2/9 of 3/7 of 84?
190. A recycling factory makes its own paper cups for canteen use. It can make one new cup from nine used ones. If it has 515 used cups how many can it possibly make in total?
