The ratio of working of A and B are in the ratio of 2 :  3. The number of days taken by them to finish the work in the ratio:

• 2 : 3

• 4 : 9

• 3 : 2

• 3 : 2

The ratio of two positive numbers is 3 : 4. The sum of their squares is 400. What is the sum of the numbers?

• 28

• 22

• 24

• 24

If 10% loss is made on selling price, then the rate of loss on the cost price will be

• 

• 

• 10%

• 11%
  
  

If "basis points" are defined so that 1 percent is equal to 100 basis points, then by how many basis points is 82.5 percent greater than 62.5 percent?

• 0.2%

• 20%

• 200%

• 2000%

Sound travels at 330 m/sec. The distance (in km) of a thunder cloud when its sound follows the flash after 10 sec is

• 0.33 km

• 3.3 km

• 33 km

• 33.3 km

56.

For what sum will the simple interest at R% for R years will be R?

• 

• 

• 

• 

If  then value of  is

• 5

• 6

• 7

• 8

The third proportional of the following numbers (x - y)²,  (x² - y²)² is:

• (x + y)³ (x - y)²

• (x + y)⁴ (x - y)²

• (x + y)² (x - y)²

• (x + y)² (x - y)²

Two circles touch each other externally. The distance between their centres is 7 cm. If the radius of one circle is 4 cm, then the radius of the other circle will be

• 3 cm

• 4 cm

• 5.5 cm

• 3.5 cm

Let Δ ABC and Δ ABD be on the same base AB and between the same parallels AB and CD. Then the relation between areas of Δ ABC and Δ ABD will be

• Δ ABD = 1/3 Δ ABC

• Δ ABD = 1/2 Δ ABC

• Δ ABC = 1/2 Δ ABD

• Δ ABC = 1/3 Δ ABD