In a group of cows and hens, the number of legs are 14 more than twice the number of heads. The number of cows is
Let the number of cows be x and the number of hens be y. Then, 4x + 2y = 2 (x + y) + 14 =>4x + 2y = 2x + 2y + 14 => 2x = 14 x = 7.
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I have a few sweets to be distributed. If I keep 2, 3 or 4 in a pack, I am left with one sweet. If I keep 5 in a pack, I am left with none. What is the minimum number of sweets I have to pack and distribute ? |
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2 trains starting at the same time from 2 stations 200km apart and going in opposite direction cross each other at a distance of 110km from one of the stations.what is the ratio of their speeds ? |
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If 9x-3y=12 and 3x-5y=7 then 6x-2y = ? |
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Two bus tickets from city A to B and three tickets from city A to C cost Rs. 77 but three tickets from city A to B and two tickets from city A to C cost Rs. 73. What are the fares for cities B and C from A ? |
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The total of the ages of Amar, Akbar and Anthony is 80 years. What was the total of their ages three years ago ? |
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A man took loan from a bank at the rate of 12% p.a. simple interest. After 3 years he had to pay Rs. 5400 interest only for the period. The principal amount borrowed by him was. |
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The total age of A & B is 12 years more than the total age of B & C. C is how many year younger than A. |
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The present age of a father is 3 years more than three times the age of his son.Three years hence,father as age will be 10 years more than twice the age of the son.Find the present age of the father. |
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In one hour a boat goes 11 km long the stream and 5 km against the stream.The speed of the boat in still water is? |
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A train 110 m long travels at 60 kmph. How long does it take to pass a telegraph post by the side of the track ? |
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