# Copper and zinc are in the ratio 2 : 3 in 200 gms of an alloy. The quantity (in grams) of copper to be added to it to make the ratio 3 : 2 is

1.  100

2.  120

3.  125

4.  150

4

100

Explanation :
No Explanation available for this question

1.  50o

2.  40o

3.  25o

4.  80o

4

50o

Explanation :
No Explanation available for this question

# The speeds of three cars are in the ratio 3 : 4 : 5. The time taken by each of them to travel the same distance is in the ratio

1.  12 : 15 : 20

2.  3 : 4 : 5

3.  20 : 15 : 12

4.  5 : 4 : 3

4

20 : 15 : 12

Explanation :
No Explanation available for this question

1.  4 : 7 : 1

2.  12 : 7 : 3

3.  4 : 7 : 3

4.  12 : 7 : 1

4

12 : 7 : 3

Explanation :
No Explanation available for this question

# If x : y = 3 : 4, find the ratio (3y – x) : (2x + y).

1.  10 : 9

2.  9 : 10

3.  6 : 5

4.  5 : 6

4

9 : 10

Explanation :
No Explanation available for this question

# If (2x - y)2 + (3y - z)2 = 0, then x : y : z is

1.  1 : 2 : 6

2.  2 : 1 : 3

3.  2 : 3 : 1

4.  1 : 2 : 3

4

1 : 2 : 6

Explanation :
No Explanation available for this question

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# If cylinder A has three times the height and one-third the diameter of cylinder B, then volume of A : volume of B equals

1.  3 : 1

2.  9 : 1

3.  1 : 3

4.  1 : 9

4

1 : 3

Explanation :
No Explanation available for this question

# If the height of a given cone be doubled and radius of the base remains the same, then the ratio of the volume of the given cone to that of the new come will be

1.  1 : 2

2.  1 : 4

3.  2 : 1

4.  1 : 8

4

2 : 1

Explanation :
No Explanation available for this question

1.  16 cm

2.  22 cm

3.  24 cm

4.  28 cm

4