In order to encourage his son to study maths, a father agrees to pay his boy 8 cents for each problem correctly solved and to fine him 5 cents for each incorrect solution. At the end of 26 problems, neither owes anything to the other.How many problems did the boy solve correctly? AnswerTen problemsLet x […]
A husband and a wife have a combined age of 91. The husband is now twice as old as his wife was when he was as old as she is now. How old are they? AnswerHusband = 52, Wife = 39.If we call the husband’s age h, and the wife’s w, we know:h + w
A number of cats got together and decided to kill between them 999919 mice. Each cat killed an equal number of mice. How many cats do you think there were?There are two conditions:a) It is not one cat that killed the lot because I have used the word ‘Cats’.b) It is not 999919 cats because
Halloween was almost over, and Mr. Green had less than 20 candies left. When the doorbell rang, he thought he would give all the candies away.When he opened the door, there were two trick or treaters. He wanted to give away the candies evenly, but he noticed that when he divided the candies in two,
Brock and his brothers bought their mom a 3 pound box of candies. Each candy was wrapped in coloured foil and weighed 2 ounces.There were at least 3 wrappers of each colour.There were twice as many blue wrappers as green wrappers.The number of gold wrappers equalled the number of silver wrappers.There was one more candy
The odometer of a car shows 7,2,927 miles, a palindromic number. What is the minimum number of miles you would need to travel to form another?HintA palindrome can be read both forwards and backwards, like “Kayak”. Answer110 miles (73037)
At a certain fast-food restaurant, Brain can buy 3 burgers, 7 shakes and one order of Fries for $120 exactly. At the same place it would cost $164.50 for 4 burgers, 10 shakes and one order of fries. How much would it cost for an ordinary meal of one burger, one shake and one order
In the course of constructing a pyramid, a large stone cube was being transported across the desert on logs. All of the logs were two metres in circumference. How far did the stone cube move in relation to the ground, with each complete revolution of the logs? AnswerFour metres. The logs move ahead two metres
How much money would I have had if, in spending 1/5 and then 1/5 of the remaining, I had altogether spent $36.00? Answer$100.
The last three digits of Allison’s licence plate have a product of 360. The sum of the digits is 22 and the digits are in order from the least to the greatest. What are the three digits of her licence plate? AnswerLast Digits=5, 8 and 9. (5×8)x9= 360. 5+8+9= 22.
Aly lives in a street with 12 houses. Every day she gets more letters than are delivered to any other house. Today 57 letters were delivered to her street. What is the smallest number of letters that Aly could have received today? Answer6 letters.For Aly to receive the least amount of letters, the deliveries had
Dear Jim:Our twenty-fifth reunion went wonderfully last week. The Maths Department put on a great spread. I’m sorry you couldn’t make it. I ran into Ralph Jones there. Do you remember him? It turns out he married Susie Jacobsen a couple of years after graduation. Imagine that! They have three kids, all boys, and their
I was talking to a friend Tammy, the middle child of five. She has a younger sister Tracey, and three brothers Tommy (Oldest child), Timmy and Tony (youngest child). I asked her how old she was, but she hardly ever gives a straight answer. The following is the conversation we had.“How old are you, Tammy?”“I
A child went to the doctor. The doctor took the child’s temperature. On his note pad the doctor noted the temperature as 97.6. After the examination the doctor told the child that he was perfectly healthy. How can this be? Answer98.6 degrees Fahrenheit is only an average of people’s body temperatures. Someone’s true temperature may
Saku was feeling hungry one summer day, so she decided to make herself a strawberry jam sandwich.She spread the jam on the bread and when she had finished making her sandwich she went to pick up the jar of jam, only to find that it was now sitting in a puddle where previously there had