A garrison has sufficient food for 75 soldiers for a period of 90 days. After 10 days, one- third of the soldiers leave. After another 10 days, 5 soldiers return. From this day on, how many days will the food last

1.  80

2.  90

3.  100

4.   110

5.  120

View Answer  
5
Correct Answer :

100


Explanation :
No Explanation available for this question

A contractor undertakes to do a job in 20 days so he employs 36 laborers. After 5 days he realizes that three-eleventh of the work is over. To finish the work exactly on time, how many more laborers does he need to employ or how many can he afford to fire

1.  Hire 4

2.   Hire 32

3.  Fire 4

4.  Hire 32

5.  No change

View Answer  
5
Correct Answer :

Fire 4


Explanation :
No Explanation available for this question

A string 30 cm long when wound across a cylinder, makes 25½ tones. Now many rounds would a string 45 cm long make when wound across a cylinder The radii of the former and latter cylinder are in the ratio 4 : 3

1.  28(11/16)

2.  12(3/4)

3.  22(2/3)

4.  51

5.   None of these

View Answer  
5
Correct Answer :

51


Explanation :
No Explanation available for this question

Mahesh the mechanic has a machine which has four cog wheels in connection. The largest wheel has 242 teeth and the others have 66, 48 and 26, respectively. How many rotations must the largest wheel make before each of the wheels is back in its starting

1.  512

2.  312

3.  484

4.  660

5.  None of these

View Answer  
5
Correct Answer :

312


Explanation :
No Explanation available for this question

State true of false: If k/l=m/n and p/q =r/s, then kp+lp/kp-lq=mr+ns/mr-ns

1.  Always true

2.  Always false

3.  Depends on relative values of k and p only

4.  Depends on relative values of k, m, p, r only

5.  Depends on relative values of all the variables

View Answer  
5
Correct Answer :

Always true


Explanation :
No Explanation available for this question

If a right circular cone of height 24 cm has a volume of 1232 cm cube, then the area of its curved surface is :

1.  450cm2

2.  550cm2

3.  650cm2

4.  750cm2

View Answer  
4
Correct Answer :

550cm2


Explanation :
No Explanation available for this question

If the square of a varies directly as the cube of b and a = 3 when b = 4, find the value of b when a =1/√3

1.  2/√3

2.  4/√3

3.  2/3

4.  4/3

5.  4√3

View Answer  
5
Correct Answer :

4/3


Explanation :
No Explanation available for this question

X varies directly as the square root of Y and inversely as the cube of Z. If X = 3 when Y =256 and Z = 2, find Y when X=24 and Z=1/2

1.  4

2.  1/1024

3.  512

4.  1/4√2

5.  32

View Answer  
5
Correct Answer :

4


Explanation :
No Explanation available for this question

A metallic sheet is of rectangular shape with dimensions 48 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m cube) is:

1.  4120 m cube

2.  4140 m cube

3.  5140 m cube

4.  5120 m cube

View Answer  
4
Correct Answer :

5120 m cube


Explanation :
No Explanation available for this question

The slant height of a conical mountain is 2.5 km and the area of its base is 1.54 km square. The height of mountain is :

1.  2.3 km

2.  2.4 km

3.  2.5 km

4.   2.6 km

View Answer  
4
Correct Answer :

2.4 km


Explanation :
No Explanation available for this question
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