Quiz Discussion

The actual area of a rectangle is 60 Cm2, but while measuring its length a student decreases it by 20% and the breadth increases by 25%. The percentage error in area, calculated by the student is :

Course Name: Quantitative Aptitude

  • 1] 5%
  • 2] 15%
  • 3] 20%
  • 4] No change
Solution
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# Quiz
1
Discuss

P is 6 times greater than Q then by what per cent is Q smaller than P?

  • 1] 84%
  • 2] 85.5%
  • 3] 80%
  • 4] 83.33%
Solution
2
Discuss

A clock is set right at 12 noon on Monday. It losses 1/2 % on the correct time in the first week but gains 1/4 % on the true time during the second week. The time shown on Monday after two weeks will be

 

  • 1] 12 : 25 : 12
  • 2] 11 : 34 : 48
  • 3] 12 : 50 : 24
  • 4] 12 : 24 : 16
  • 5] None of these
Solution
3
Discuss

The length, breadth and height of a room in the shape of a cuboid are increased by 10%, 20% and 50% respectively. Find the percentage change in the volume of the cuboid.

  • 1] 77%
  • 2] 75%
  • 3] 88%
  • 4] 98%
  • 5] 99%
Solution
4
Discuss

At the beginning of a year ,the owner of a jewel shop raised the price of all the jewels in his shop by x% and lowered them by x%. The price of one jewel after this up and down cycle reduced by Rs. 100. The owner carried out the same procedure after a month. After this second up-down cycle,the price of that jewel was Rs. 2304. Find the original price of that jewel(in Rs.)

  • 1] 2500
  • 2] 2550
  • 3] 2600
  • 4] 2650
  • 5] None of these
Solution
5
Discuss

In a laboratory experiment, a sample of air which is a mixture of oxygen and water vapour is taken. Water vapour, contains hydrogen and oxygen gases. If air contains a total of 70% oxygen (including that contained in the water vapour) by weight while water vapour contains 16.66% of oxygen by weight, how many kilograms of water vapour is present in 1 kilogram of air?

  • 1]

    0.20

  • 2]

    0.36

  • 3]

    0.32

  • 4]

    0.25

Solution
6
Discuss

The population of a town increased from 175000 to 262500 in a decade. The average percent increase of population per year is?

  • 1]

    33.33%

  • 2]

    5%

  • 3]

    6%

  • 4]

    8.75%

Solution
7
Discuss

If two numbers are respectively 30% and 40% more than a third number, what percent is the first of the second?

  • 1]

    %

  • 2]

    %

  • 3]

    80%

  • 4]

    75%

Solution
8
Discuss

1.14 expressed as a per cent of 1.9 is:

  • 1] 6%
  • 2] 10%
  • 3] 60%
  • 4] 90%
Solution
9
Discuss

Ram spends 30% of his salary on house rent, 30% of the rest he spends on his children's education and 24% of the total salary he spends on clothes. After his expenditure, he is left with Rs. 2500. What is Ram's salary?

  • 1] Rs. 11,494.25
  • 2] Rs. 20,000
  • 3] Rs. 10,000
  • 4] Rs. 15,000
Solution
10
Discuss

Last year, the population of a town was x and if it increases at the same rate, next year it will be y. the present population of the town is

  • 1]

  • 2]

  • 3]

     

     

  • 4]

Solution
# Quiz