Multiple Choice QuestionsThe ratio of working of A and B are in the ratio of 2 :Â 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
A.
28
Let the first number = 3x
 Second number = 4x
According to the question,
(3x)2 +Â (4x)2 = 400
 9x2 + 16x2 = 400
      25x2 = 400
      
∴  Required sum = 3x + 4x = 7x = 7 x 4 = 28
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
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
Switch
then value of 
is
