The average salary, per head, of all the workers of an institution is 60. The average salary of 12 officers is 400; the average salary, per head, of the rest is 56. The total number of workers in the institution is -

The length of diagonal of a square is $${15\sqrt { 2}}$$cm. Its area is

The value $${7+3\sqrt {5}\over3+\sqrt { 5}}-{7-3\sqrt {5}\over3-\sqrt { 5}}$$ lies between

While selling an article, a shopkeeper gives a discount of 5%. If he gives a discount of 7%, he earns Rs.15 less as profit. The marked price of the article is -

The marked price of an article is Rs.800. A retailer buys it for Rs.540 after getting two successive discounts. The first discount is 25 %. What is the second discount?

The average of the largest and smallest 3 digit numbers formed by 0, 2 and 4 would be 

The adjacent angles on a straight line are in the ratio 5 ∶ 4, then the smaller angle is –

Direction: In the following questions two equations numbered I and II are given. You have to solve both the equations and give answer.
(A) x>y
(B) x≥y
(C) x˂y
(D) x≤y
(E) x=y or the relations ship cannot be established

I. $$ {9x^2+5=18x}$$
II. $${2y^2-9y+10=0}$$