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A train takes 50 minutes to complete a journey, travelling at the rate of 48 km/hr. In order for the journey to be completed in 40 minutes what should be the speed of the train ?
The diagonal of a square is d. The square having twice the area will have a perimeter of :
The average of 8 numbers is 12. If every number is increased by 2 then what will be the average of the new group of numbers ?
Find the sum of first 21 terms of an arithmetic series if its eleventh term is 40.
There is a 7 m wide road along the four sides of a square park. If the perimeter of outer surface of the park is 352 m, then find the area of the road (in sq. m.)?
The next number is the series
1, 3, 6, 10, ……… is :
A person pays Rs. 1373.70 for an almirah after a discount of 5%. The price of almirah is :
A pair of shoes is sold for Rs. 873 at a loss of 3%. What will be its selling price to get 12% profit ?
Two varieties of wheat costing Rs. 12 per kg and Rs. 18 per kg are mixed together in the respective ratio of 3 : 2. Find the cost of resulting mixture (in Rs. Per kg).
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