It is May 2003 and today three planets and a central star are in a straight line (this isn’t necessarily our solar system). The farthest planet takes 18 years to complete an orbit around the central star; the second farthest takes 9 years to orbit around the star; and the nearest takes 4 years 6 […]
A man ordered a length of rope by telephone from his nearest hardware shop. But when he went to collect the rope, he found that the assistant had wrongly written the order by interchanging feet and inches. As a result of this, the rope was only 30 per cent of the length that the man
A painting job can be completed by 7 painters in 17 days. If 7 more painters join the team 7 days after starting work on the job, then how many more days are required to complete the job? AnswerTotal effort required by 7 painters for 17 days = 7 x 17 = 119 man-days.Initial effort
Three boys went to their neighbour’s tree to steal apples. Only one of them could climb so that the boy might start to pick apples.The neighbour woke up and he came outside to investigate. The other two boys who couldn’t climb got scared and ran away. The boy up in the tree waited patiently until
If 3 thistled thrushes eat 3 packs of birdseed in 3 weeks and 4 feathery finches eat 4 packs of birdseed in 4 weeks and 6 coloured cockatoos eat 6 packs of birdseed in 6 weeks then how much birdseed will feed 12 thistled thrushes, 12 feathery finches and 12 coloured cockatoos for 12 weeks?
Every 5th Sunday of the month (when the month even has five Sundays), the local church has a special co-educational activity planned, in place of Sunday school. How often, or on how many Sundays, does this happen each year?Assume that if ever there’s a 53rd Sunday in the year, the activity is cancelled due to
There are two dogs. Both have fleas.If one flea jumps from the 1st dog to the 2nd, then both will have the same amount.Or if one flea jumps from the 2nd dog to the 1st, then the 1st will have 5 times the amount of the 2nd.How many fleas do each dog have before any
A lion takes 4 hours to eat one sheep, a leopard takes 5 hours and a bear takes 6. If a single sheep was thrown to them, how long would they take to devour it? Answer60/37 hours (about 1.6 hours). In one hour, a lion eats 1/4 of a sheep, a leopard eats 1/5 and
Chris and Jill were married. On their marriage day, Chris was three times as old as Jill. 21 years later, Chris was only 2 times as old as Jill. What was their age when they were married?Hint: c= Chris’ age at marriagej= Jill’s age at marriage c = 3j at marriagec + 21 = 2j
A man goes into a store one day, and says to the cashier, “If you can match and give me what I have in my pocket, I will spend $10 in your store.”The cashier matched and gave the man the money, and the man spent $10. The man then went to another store, said the
In the month of May, the mathematician Maria Gaerana was born in Italy. Maria was a gifted child who spoke more than a dozen languages by age nine. Her love, however, was mathematics, and even in a time when women were not educated, she became famous for her published books on mathematics. Solve the following
Adoontourious wanted to run the shore-to-shore marathon next month, a 26-mile race from one side of the island, where he lived, to the other. He decided to work up the 26 miles by running five days a week for the next five weeks. Each day he’d run one mile longer than he did the day
A local school teacher wanted to share 703 sweets equally among the pupils. If there were more than 20 pupils, how many sweets did each receive? Answer19 sweets for the 37 pupils.Besides 1 and 703, 19 and 37 are the only factors of 703.
Gazza went to the electricity shop to get stuff for his new house. He needed 5 items—a stereo, a cooker, a TV-set, a washing machine and a tumble dryer. Each item was priced exactly to the pound and no two items cost the same. If Gazza had only 349 pounds to spend, what is the
You have two very hungry termites and two sticks of wood. One stick of wood is 12 inches long and the other is 16 inches long. One termite can eat sticks at the rate of 1 inch every 3 minutes. The other termite can eat 1 inch in 4 minutes. How would you use the
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