The product of two numbers x and y is twice the sum of the numbers. What is the sum of the reciprocals of x and y ?
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Job Solution Bangladesh Bank Bangladesh Bank - Assistant Director - 2012 গণিত
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A car uses 1 liter of petrol to travel 17 miles. After a tune-up, the car travels 17% farther on one liters. How many liters ( best approximation ) of petrol will it take for the car to travel 170 miles after a tune-up ?

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Three angles of a triangle are in proportion 5 : 6 : 7. Then what is the difference in degrees between the biggest and the smallest angles ?

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Square of a number plus two times the number equal 63. What is the number ?

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In 1990, Hotel Seagull earned TK. 5 million in tourist revenue. By 2000, tourist revenue doubled and in 2010, it reached the sum TK. 20 million. Each of the following , if true , may explain the trend in tourist revenue except :

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Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in:

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