What is the value of (x) in the following equation?

x0.4/16=32/x2.6

•  8 
• 9
• 6 
• 6 

• 11
•  24.5
• 34
• 34

The value of k for which kx+3y-k+3 = 0 and 12x+ky = k, have infinite solutions, is

• 0

• -6

• 6

• 6

If a point (x, y) in a OXY plane is equidistant from (-1,1) and (4,3) then

• 10x+4y = 23

• 6x+4y = 23

• –x+y = 7

• –x+y = 7

The least value of x, for which the expression x2+x+17 will not give a prime number, is

• 7

• 11

• 13

• 13

If (9/7)3 x (49/81)2x-6=(7/9)9, then the value of x is:

• 12

• 8

• 10

• 10

Francis has 18 eggs out of which 12 eggs were sold at 10% loss than the cost price. At what mark up should be sell the remaining eggs to cover his losses?

• 5%

• 10%

• 15%

• 15%

8.

If the length and height of a brick increases by 10% each respectively, and the breadth reduces by 20%, what is the percentage change in the volume of the brick?

• 28

• 26

• 32

• 32