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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

A uniformly moving train of length 480 m takes 3 minutes to completely cross a platform. If the same train, with the same speed crosses a pole completely in 30 sec, then the length of the platform is -

A) 1 km B) 600 m
C) 4.8 km D) 1.2 km
 
Answer & Explanation Answer:

Explanation:

Let length of platform be ‘y’metres.

Then, at the platform,Distance travelled = y + (length of train) = (y + 480)m

Then, Speed of train = (y + 480)m / (3x60) sec = (y+480)/180 ...(1)

Also, at the pole,Distance travelled = length of train = 480m

Then, Speed of train = 480m / 30sec = 16 m/s ...(2)

Equating eq.(1) & eq.(2), we get,

(y+480)/180 = 16(y+480) = 16 x 180 = 2880

y = 2880 –480 = 2400m or 2.4 km long platform.

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Filed Under: Problems on Trains
Exam Prep: Bank Exams
Job Role: Bank PO , Bank Clerk

2 2586
Q:

A wholesaler sells a watch to a retailer at a gain of 37% and the retailer sells it to a customer at a loss of 25%. If the customer pays Rs 2,620.125, what had it cost the wholesaler?

A) Rs 2550 B) Rs 2692
C) Rs 3327 D) Rs 2408
 
Answer & Explanation Answer: A) Rs 2550

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

3 2585
Q:

A rice trader buys 16 quintals of rice for Rs 5632. 20% rice is lost in transportation. At what rate should he sell to earn 25% profit?

A) Rs 225.2 per quintal B) Rs 550 per quintal
C) Rs 440 per quintal D) Rs 563.2 per quintal
 
Answer & Explanation Answer: B) Rs 550 per quintal

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

5 2583
Q:

Rs 3200 is divided among A, B and C in the ratio of 3 : 5 : 8 respectively. What is the difference (in Rs) between the share of B and C?

A) 400 B) 600
C) 800 D) 900
 
Answer & Explanation Answer: B) 600

Explanation:
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Filed Under: Partnership
Exam Prep: AIEEE , Bank Exams , CAT

1 2583
Q:

If a : b = c : d = 1 : 6, then what is the value of a2+c2b2+d2?

A) 1/600 B) 1/60
C) 1/36 D) 1/360
 
Answer & Explanation Answer: C) 1/36

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 2583
Q:

A wholesaler sold a water purifier at a loss of 40%. If the selling price has been increased by Rs. 125, then wholesaler will get the profit of 10%. What was the cost price of the purifier?

A) Rs. 250 B) Rs. 225
C) Rs. 275 D) Rs. 300
 
Answer & Explanation Answer: B) Rs. 225

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

5 2582
Q:

In a city, 40% of the people are illiterate and 60% are poor. Among the rich, 10% are illiterate. The percentage of the illiterate poor population is

A) 36 B) 60
C) 50 D) 40
 
Answer & Explanation Answer: B) 60

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Filed Under: Percentage
Exam Prep: Bank Exams

2 2580
Q:

If A is 6 times more than B, then by what percentage is B is less than A?

A) 64.82 B) 83.33
C) 28.56 D) 85.71
 
Answer & Explanation Answer: D) 85.71

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Filed Under: Percentage
Exam Prep: Bank Exams , CAT

4 2579