For the following questions answer them individually
The cost of manufacture of an article was 900. The trader wants to gain 25% after giving a discount of 10%. The marked price should be :
Three sides of a triangular field are of length 15 m, 20 m and 25 m long respectively. Find the cost of sowing seeds in the field at the rate of 5 rupees per sq.m.
A, B, C and D purchase a gift worth 60. A pays 1/2 of what others are paying, B pays 1/3 rd of what others are paying and C pays 1/4 th of what others are paying. What is the amount paid by D?
Taking any three of the line segments out of segments of length 2 cm, 3 cm, 5 cm and 6 cm, the number of triangles that can be formed is :
If $$x^{2}+y^{2}+z^{2}=2(x-y-z)-3$$, then the value of $$2x-3y+4z$$ is [Assume that x, y, z are all real numbers) :
A swimmer swims from a point A against a current for 5 minutes and then swims backwards in favour of the current for next 5 minutes and comes to the point B. If AB = 100 metres, the speed of the swimmer (in km per hour) is :
Two circles of same radius 5 cm, intersect each other at A and B. If AB = 8 cm, then the distance between the centres is :
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