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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

A cistern has one inlet, L and one inlet, M. L takes 5 hours to fill the empty tank, when M is not open and M takes 8 hours to empty the full tank, if the tank is two fifth full, how much time will it take to fill the tank completely when both L and M are opened simultaneously? (in hours)

A) 5 hours B) 3 hours
C) 6 hours D) 8 hours
 
Answer & Explanation Answer: D) 8 hours

Explanation:
If the tank is 2/5th full, then remaining empty tank will be = 1-2/5=3/5th
L and M can fill the empty tank in = (5*8)/(8-5)=40/3 hours

Then 3/5 th tank fill in =40/3 * 3/5= 8 hours

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Filed Under: Pipes and Cistern
Exam Prep: Bank Exams

2 2201
Q:

Ravi sold a smartphone for Rs. 30,000. Had he offered a discount of 10% on the selling price(SP), he would have earned a profit of 35%. What is the cost price?

A) Rs. 20,000 B) Rs. 22,000
C) Rs. 24,000 D) Rs. 26,000
 
Answer & Explanation Answer: A) Rs. 20,000

Explanation:
30,000*90/100 = 27000
27,000 = CP*135*/100
CP = 20000
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

2 2200
Q:

The marked price of a chair is 40% more than its cost price. If the chair is sold for Rs 520 after a discount of Rs 40, then what will be the profit percentage?

A) 33 B) 40
C) 25 D) 30
 
Answer & Explanation Answer: D) 30

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

2 2200
Q:

If A, B and C together do a job in 4 days, A and C together do the job in 4.5 days and B and C together do the job in 12 days then in how many days can C alone do the job?

A) 36 B) 6
C) 18 D) 12
 
Answer & Explanation Answer: C) 18

Explanation:
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Filed Under: Time and Work
Exam Prep: Bank Exams

2 2199
Q:

A profit of Rs. 960 is divided between A and B in the ratio 1/3:1/2. The difference of their profit is :

A) Rs.120 B) Rs.160
C) Rs.180 D) Rs.240
 
Answer & Explanation Answer: D) Rs.240

Explanation:
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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

0 2199
Q:

A bag contains 25 paise, 50 paise and 1 Rs coins. There are 220 coinsinall and the total amount in the bag is Rs. 160. If there arethrice as many 1 Rs. coins as there are 25 paise coins, then what is the number of 50 paise coins?

A) 60 B) 40
C) 120 D) 80
 
Answer & Explanation Answer: A) 60

Explanation:

Let there be x one rupee coin, y 50 paise coin, z 25 paise coinx + y + z = 220......(i)

Total amount = 160

Now, x + (y/2) + z = 160 ......(ii)

⇒4x + 2y + z = 640

Thrice as many 1 re coin as 25 paise

⇒x = 3z ......(iii)

On solving equation (i), (ii) and (iii), we get

z = 40x= 3* 40 = 120y = 220 –(120 + 40 ) = 60

So, 50 paise coin =60

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Filed Under: Simplification
Exam Prep: Bank Exams

0 2199
Q:

If Sin θ = 20/29, then what is the value of Cos θ?

A) 29/21 B) 21/29
C) 21/20 D) 20/29
 
Answer & Explanation Answer: B) 21/29

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

2 2198
Q:

The marked price of a chair is 40% more than its cost price. If the chair is sold for Rs 520 after a discount of Rs 40, then what will be the profit percentage?

A) 33 B) 40
C) 25 D) 30
 
Answer & Explanation Answer: D) 30

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

8 2197