# Quiz Discussion

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 :

Course Name: Quantitative Aptitude

• 1] 14.4 kg
• 2] 37.5 kg
• 3] 40 kg
• 4] 48 kg
##### Solution
No Solution Present Yet

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# Quiz
1
Discuss

The length, breadth and height of a room are in ratio 3:2:1. If breadth and height are halved while the length is doubled, then the total area of the four walls of the room will

• 1] remain the same
• 2] decrease by 13.64%
• 3] decrease by 15%
• 4] decrease by 18.75%
• 5] decrease by 30%
##### Solution
2
Discuss

The price of rice falls by 20%. How much rice can be bought now with the money that was sufficient to buy 20 kg of rice previously?

• 1] 5 kg
• 2] 15 kg
• 3] 25 kg
• 4] 30 kg
##### Solution
3
Discuss

The price of a car depreciates in the first year by 25% in the second year by 20% in third year by 15% and so on. The final price of the car after 3 years, if the present cost of the car is Rs. 10,00,000 :

• 1] 7,80,000
• 2] 1,70,000
• 3] 6,90,000
• 4] 5,10,000
##### Solution
4
Discuss

A student appeared in the Mock CAT. The test paper contained 3 sections namely QA, DI and VA. The percentage marks in all VA was equal to the average of percentage marks in all the 3 sections. Coincidentally, if we reverse the digit of the percentage marks of QA we get the percentage marks of DI. The percentage marks in VA scored by student could be:

• 1] 81
• 2] 48
• 3] 66
• 4] 69
• 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

In a factory there are three types of machine M1, M2 and M3 which produces 25%, 35% and 40% of the total products respectively. M1, M2 and M3 produces 2%, 4% and 5% defective products, respectively. what is the percentage of non-defective products ?

• 1] 89%
• 2] 97.1%
• 3] 96.1%
• 4] 86.1%
• 5] None of these
##### Solution
7
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
8
Discuss

The square of a positive number is 2000% greater than the number itself, then the square of that number is :

• 1] 1762
• 2] 1635
• 3] 441
• 4] 139
##### Solution
9
Discuss

600 students took the test on Physics and chemistry. 35% students failed in Physics and 45% students failed in chemistry and 40% of those who passed in chemistry also passed in Physics, then how many students failed in both :

• 1] 16
• 2] 15
• 3] 13
• 4] 12
##### Solution
10
Discuss

What percent is 3% of 5% ?

• 1]

60%

• 2]

15%

• 3]

50%

• 4]

30%

# Quiz