Quiz Discussion

An ore contains 25% of an alloy that has 90% iron. Other than this, in the remaining 75% of the ore, there is no iron. How many kilograms of the ore are needed to obtain 60 kg of pure iron?

Course Name: Quantitative Aptitude

  • 1] 250 kg
  • 2] 275 kg
  • 3] 300 kg
  • 4] 266.66 kg
Solution
No Solution Present Yet

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# Quiz
1
Discuss

Two tailors X and Y are paid a total of Rs. 550 per week by their employer. If X is paid 120 percent of the sum paid to Y, how much is Y paid per week?

  • 1]

    Rs. 200

  • 2]

    Rs. 250

  • 3]

    Rs. 300

  • 4]

    None Of These

Solution
2
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
3
Discuss

The marked price of an article is Rs 2400. It is sold at two successive discounts of 10% and 15%. What is the selling price (in Rs) of the article?

  • 1]

    1836

  • 2]

    1924

  • 3]

    1848

  • 4]

    1976

Solution
4
Discuss

Half percent, written as a decimal, is

  • 1] 0.2
  • 2] 0.02
  • 3] 0.005
  • 4] 0.05
Solution
5
Discuss

In an institute, 60% of the students are boys and the rest are girls. Further 15% of the boys and 7.5% of the girls are getting a fee waiver. If the number of those getting a fee waiver is 90, find the total number of students getting 50% concessions if it is given that 50% of those not getting a fee waiver are eligible to get half fee concession?

  • 1] 360
  • 2] 280
  • 3] 320
  • 4] 330
  • 5] 350
Solution
6
Discuss

30% of a number when subtracted from 91, gives the number itself. Find the number.

  • 1] 60
  • 2] 65
  • 3] 75
  • 4] 70
  • 5] None of these
Solution
7
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
8
Discuss

If the price of a commodity is decreased by 20% and its consumption is increased by 20%, what will be the increase or decrease in expenditure on the commodity?

  • 1] 4% increase
  • 2] 4% decrease
  • 3] 8% increase
  • 4] 8% decrease
Solution
9
Discuss

An alloy contains the copper and aluminum in the ratio of 7 : 4 While making the weapons from this alloy, 12% of the alloy got destroyed. If there is 12 kg of aluminum in the weapon, then weight of the alloy required is :

  • 1] 14.4 kg
  • 2] 37.5 kg
  • 3] 40 kg
  • 4] 48 kg
Solution
10
Discuss

The ratio 5 : 4 expressed as a percent equals :

  • 1]

    12.5 %

  • 2]

    40 %

  • 3]

    80 %

  • 4]

    125 %

Solution

5 : 4 = 5/4 = ( (5/4) x 100 )% = 125%.

# Quiz