The ratio between the ages of P and Q four yrs ago was 5 : 6. If the total of their ages at present is 52 yrs, what is the ratio of their present ages?
If x + y = 6 and 3x - y = 4, then x - y is equal to
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A train starts with full of passenges.At the first station,the train drops one-third of the passengers and takes in 96 more.At the next station,one half of the passengers on board get down while 12 new passengers get on board.The number of passengers now is 240.The number of passengers in the beginning was
A company produces on an average 4000 items per month for the first 3 months. How many items it must produce on an average per month over the next 9 months, to average 4375 items per month over the whole?
A rectangular park is 200 by 150m. Two cross paths are to be made one parallel to the length and the other parallel to the breadth. The longer path is to be 3 m wide and the shorter is to be 2 m wide. The cost of grassing the remaining part of the park @ Rs. 1000 per ha is
Diagonals of a rhombus are in the ratio 3:4 and its area is 2400 cm2. Side of the rhombus is
The area of the sector of the circle is 1/10th the area of the circle. The angle of the sector is
The average of 50 numbers is 30. If two numbers, 35 ad 40 are discarded, then the average of the remaining numbers is nearly:
If the equation 12x² + 7xy - py² - 18x + y + 6 = 0 represents a pair of perpendicular lines, then
AB∥CD and P is a point between the lines, the measure of the angles ∠ABP+∠BPD+∠CDP is
Lines AB and CD intersect at O. This forms four angles. If sum of three of these is 299° then the measure of the fourth angle is
A light house is 60 metres high with its base being at the sea level.If the angle of depression of a boat in the sea from the top of the light house is 15°,then the distance of the boat from the foot of the light house is equal to
A tap can fill a tank in one hour. A second tap empty it in 30 minutes. If both the taps operate simultaneously, how much time is needed to empty the tank?
Kewal sells two tape recorders at the same price. On one,he gains 10% and on the other, he loses 10%. The total gain or loss in the transaction is
In a triangle AC, if a = 2, B = 60° and c = 75°, then b =
Rs 6400 are divided among three workers in the ratio . The share of the second worker (in rupees)is