Tag: general knowledge

The distance between Station Atena and Station Barcena is 84 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 back to Barcena continuously till the train reaches Barcena. The bird finally returns to Barcena and rests. Calculate the total distance in miles the bird travels in the following two cases: a. the bird flies at 80 miles per hour and the speed of the train is 60 miles per hour b. the bird flies at 60 miles per hour and the speed of the train is 80 miles per hour

"Dad, where had you been?" asked Jack. "I had been to the attic, my son," replied Dad. "And do you know what I saw there? There was a big web with 21 spiders and flies on it." "How many spiders were there?" asked the little boy with curiosity. "Well, there were a total of 132 legs on the web," answered Dad with a smile. "Now you can find out how many spiders were there by yourself. Can't you?" Can you help the little boy find out how many spiders were on the web in the attic?

A rich merchant had collected many gold coins. He did not want anybody to know about them. One day, his wife asked, "How many gold coins do we have?" After pausing a moment, he replied, "Well! If I divide the coins into two unequal numbers, then 32 times the difference between the two numbers equals the difference between the squares of the two numbers." The wife looked puzzled. Can you help the merchant's wife by finding out how many gold coins they have?