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: SQL -Structured Query Language

  • 1] 250 kg
  • 2] 275 kg
  • 3] 300 kg
  • 4] 266.66 kg
Solution
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# Quiz
1
Discuss

The price of raw materials has gone up by 15%, labor cost has also increased from 25% of the cost of raw material to 30% of the cost of raw material. By how much percentage should there be reduction in the usage of raw materials so as to keep the cost same?

  • 1] 28%
  • 2] 17%
  • 3] 27%
  • 4] 24%
  • 5] Cannot determined
Solution
2
Discuss

The shopkeeper increased the price of a product by 25% so that customer finds difficult to purchase the required amount. But Somehow the customer managed to purchase only 70% of the required amount. What is the net difference in the expenditure on that product ?

  • 1] 55 more
  • 2] 10% more
  • 3] 12.5% less
  • 4] 17.5% less
  • 5] None of these
Solution
3
Discuss

An inspector rejects 0.08% of the meters as defective. How many will he examine to reject 2?

  • 1]

    2000

  • 2]

    2200

  • 3]

    2500

  • 4]

    2800

Solution
4
Discuss

If A's salary is 25% more than B's salary, then B's salary is how much lower than A's salary?

  • 1]

     %

  • 2]

    25%

  • 3]

    20%

  • 4]

Solution
5
Discuss

A man buys a truck for Rs. 2,50,000. The annual repair cost comes to 2% of the price of purchase. Besides, he has to pay an annual tax of Rs. 2000. At what monthly rent must he rent out the truck to get a return of 15% on his net invests of the first year?

  • 1] Rs. 3359
  • 2] Rs. 2500
  • 3] Rs. 4000
  • 4] Rs. 3212.5
Solution
6
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
7
Discuss

Vicky's salary is 75% more than Ashu's. Vicky got a raise of 40% on his salary while Ashu got a raise of 25% on his salary. By what percent is Vicky's salary more than Ashu's?

  • 1] 96%
  • 2] 51.1%
  • 3] 90%
  • 4] 52.1%
Solution
8
Discuss

Half percent, written as a decimal, is

  • 1] 0.2
  • 2] 0.02
  • 3] 0.005
  • 4] 0.05
Solution
9
Discuss

Gauri went to the stationers and bought things worth Rs. 25, out of which 30 paise went on sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?

  • 1]

    Rs. 15

  • 2]

    Rs. 15.70

  • 3]

    Rs. 19.70

  • 4]

    Rs. 20

Solution
10
Discuss

In the recent, climate conference in New York, out of 700 men, 500 women, 800 children present inside the building premises, 20% of the men, 40% of the women and 10% of the children were Indians. Find the percentage of people who were not Indian?

  • 1] 77%
  • 2] 73%
  • 3] 79%
  • 4] 83%
Solution
# Quiz