NDA Government Jobs Exams undefined

The area of a rectangle whose length is five more than twice its width is 75 square unit. The length is
(a) 5 unit (b) 10 unit (c) 15 unit (d) 20 unit

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NDA Other Question

If α and β are the roots of the equation x^2 + bx + c = 0, then what is the value of α^–1 + β^–1 ? The angle of elevation of the top of a tower of height H from the foot of another tower in the same plane is
60º and the angle of elevation of the top of the second tower from the foot of the first tower is 30º. If h is the
height of the other tower,then find relation between h and H