- 05
- 10
- 15
- 20
- b
-
16 men can do a job in 20 days
Total Work=16*20=320
Let 32 men do same job in X days
32x=320
x=320/32
x=10
Mathematics MCQs
All Mathematical MCQs from different papers are solved in this sections. All Math related MCQs have uploaded in this portion of ETEST Website. Visitors should visit ETEST Website regularly for Best Jobs Tests Preparation because ETEST Team updates ETEST Website on daily basis.
Ages of two persons differ by 16 years. If 6 years ago, the elder one be 3 times as old the younger one, find their present age?
- 16,32
- 18,34
- 12,28
- 14,30
- d
-
Let the present age of one person be=x
Let the present age of second person be=x+16
6 Years ago age of elder person=x+16-6=x+10
Age of the younger person=x-6
According to the given statement:
x+10=3(x-6)
x+10=3x-18
10+18=3x-x
2x=28
x=28/2
x=14
Younger Age=14
Elder Age=14+16=30
Rauf is 6 feet tall and he notices that he casts a shadow that’s 5 feet long. He then measure that the shadow cast by the school building is 30 feet long, the height of the building in feet is _____
- 28
- 32
- 36
- 48
- c
-
Height of Rauf=6 feet
Shadow of Rauf=5 feet
Height of the building=X
Shadow of the building=30 feet
So, 6/5=X/30
5*X=6*30
5X=180
X=180/5
X=36
On selling a ball at Rs.720, there is loss of 10%. The cost price of the ball is:
- 750
- 800
- 850
- 900
- c
-
10% of 800
10/100*800=80
800-80=720
Actual Price of Ball is 800.
At Super Market Store everything is sold for 20% less than the price marked. If store owner buys radios for Rs.80, the price should he mark them if he wants to make 20% profit on his cost is _____
- 100
- 120
- 140
- 160
- b
-
Cost of Radio=80
20% of 80=20/100*80=16
Required Sale Price=80+16=96
20% of 120=20/100*120=24
120-24=96
If Display Amount is 20 then Amount with discount will be=120-24=96
In a Jar, 1/2 of the marbles are red, ¼ are white and 1/5 are blue. The fraction of the marbles that are not red, white and blue is _____
- 2/30
- 1/20
- 3/20
- 3/30
- b
-
Red=1/2
White=1/4
Blue=1/5
Total=1/2+1/4+1/5=(10+5+4)/20=19/20
Neither Red, Blue Nor White=1-19/20=(20-19)/20=1/20
If a car travels at an average speed 25meter/second, then the average speed in Km/h is _____
- 50 Km/h
- 60 Km/h
- 90 Km/h
- 100 Km/h
- c
-
Distance Covered in 1 Second=25 Meters
One Minute=60 Seconds
One Hour=60*60=3600 seconds
Distance Covered in One Hour=25*3600=9000 Meters
1000 Meters=1 Km
90000 Meters=90000/1000=90Km
The 70% of 50 is:
- 35
- 30
- 25
- 20
- a
-
70% of 50
70/100*50
35
1:3 same as:
- 3 to 1
- 3:8
- 1 to 3
- None of these
- d
-
1:3 is same as 1/3, 2/6, 3/9, 4/12.
In a number system with base 5 number of digits use are:
- 02
- 04
- 05
- 10
- c
-
Base 5 means have 5 digits i.e. 0,1,2,3,4.
