The distance between Station Atena and Station Barcena is 78 miles. A train starts from Atena towards Barcena. A bird starts at the same time from Barcena straight towards the moving train. On reaching the train, it instantaneously turns back and returns to Barcena. The bird makes these journeys from Barcena to the train and […]
A bat ate 1050 mosquitoes in four nights. Each night she ate 25 more than the night before.How many mosquitoes did the bat eat each night? AnswerThe bat ate 225 mosquitoes on the first night, 250 on the second night, 275 on the third night, and 300 on the fourth night.Let x represent the number
Your favourite chocolate bar is having a special promotion, buy 10 get 1 free! To get a free bar, simply collect 10 wrappers and turn them in for 1 free bar. What fraction of a bar is each wrapper worth? AnswerEach wrapper is worth 1/9 of a bar.10 wrappers are worth 1 free bar, so
Arrogant Arnold and Witty Will are brothers. One day, they were going from New Jersey to Florida. Bored, they decided to ask each other brain teasers. After a while, they got bored with this, so Arnold decided to place a bet. He would ask Will one teaser, which he thought was very hard. If Will
Gretchen and Henry were looking to buy a house together, and finally found one with a beautifully landscaped yard, plenty of bedrooms, and a beautiful tree out in the front. They asked the owner how old the house was, and this was his reply:“I planted that tree when the house was built. It was 7
10 factories produce sugar cane. The second produced twice as much as the first. The third and fourth each produced 80 more than the first. The fifth produced twice as much as the second. The sixth produced 40 more than the fifth. The seventh and eighth each produced 40 less than the fifth. The ninth
There is a rubber band that is looped around an immovable steel rod. It is three inches long. At the fixed end is a spider. He starts walking along the rubber band at the rate of one inch per minute.A minute after he had started, the rubber band is stretched by three inches. The spider
Raine was trying to reset her wrist-watch one afternoon, after it had stopped running the day before. Even though she didn’t know what the real time was, her father had given her a clue. “The right time is calculated by adding 1/4 of the time since noon today to 1/2 of the time till midnight
Melvin the wizard has some magic blue orbs. Every day 1 disappears.Every 2 days 1 goes green.Every 4 days 1 green orb disappears instead of another blue one.From these facts, determine what the ratio of blue to green (or vice versa) orbs remaining is from the beginning to the end of February in the Year
You’re driving your car on the highway at 75 mph, and you notice a sign that says you are 75 miles from your destination. So if you continue driving at that speed, you’d be there in an hour.When you have driven one mile and you are now 74 miles from your destination, you drop your
Philpot Nerdling collects baseball cards and keeps them in a three-ring binder. Rather than regular pages made of paper, the binder contains plastic sleeves that are large enough to hold nine cards per page, arranged in a 3×3 grid. Cards numbered 1 through 9 are on the first page, 10 through 18 on the second
A man makes the following proposition to his friend:“I will let you flip a coin 20 times. Each time the coin lands on heads, I will give you $2.00. However, each time the coin lands on tails, you must give me $3.00.”His friend flips the coin 20 times and the end result is that no
Pating and his wife are at the entrance of their sub-division. Their sub-division is actually just a long straight road with no side streets. Their house is1 kilometre away from the entrance. While waiting for a cab to take them home, Pating decides to walk his way to their house (he needs the exercise) leaving
Gino’s mom has told him that he needs to take a bucket of water over to their neighbour since she is experiencing problems with her water supply. He doesn’t want to waste much time since he has a soccer game to play later in the afternoon. From past experience he knows if he uses the
As Mr. Smith’s birthday approaches, he starts to collect leaves. On the first day of the month, he collects one leaf; on the second day, he collects two; and so on. So by his birthday he’ll have collected 276 leaves altogether. On which day of the month is Mr. Smith’s birthday? AnswerOn the 23rd.