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Question 1 of 10

1. Question

1 points

Category: Quantitative Aptitude

A train passed two bridges of lengths 800m and 400m in 100sec and 60 sec respectively. The length of train is

Correct

Explanation:
Let X length of train
(X+800)/100=(X+400)/60
X=200m

Incorrect

Explanation:
Let X length of train
(X+800)/100=(X+400)/60
X=200m

Question 2 of 10

2. Question

1 points

Category: Quantitative Aptitude

A train running at the speed of 72 km/h crosses a 260 meters long platform in 23 seconds. What is the length of the train in meters?

Correct

Explanation:
Let X is length of train…..72km/h=20m/s
260+X/20=23
X=200 meters

Incorrect

Explanation:
Let X is length of train…..72km/h=20m/s
260+X/20=23
X=200 meters

Question 3 of 10

3. Question

1 points

Category: Quantitative Aptitude

Two trains of equal length take 10 seconds and 15 seconds respectively to cross a telegraph post. If the length of each train be 120meters, In what time (in seconds) will they cross each other travelling in opposite direction?

Correct

Explanation:
120/10+120/15=240/T
T=12 seconds

Incorrect

Explanation:
120/10+120/15=240/T
T=12 seconds

Question 4 of 10

4. Question

1 points

Category: Quantitative Aptitude

A swimmer swims a distance of 36 km in 6 hours downstream and a distance of 40 km upstream in 8 hours. What is the speed in still waters?

Correct

Explanation:
Velocity in downstream=36/6=6km/h
Velocity in upstream=40/8=5km/h
Speed in still water= Upstream+ Downstream=5+6=11km/hr

Incorrect

Explanation:
Velocity in downstream=36/6=6km/h
Velocity in upstream=40/8=5km/h
Speed in still water= Upstream+ Downstream=5+6=11km/hr

Question 5 of 10

5. Question

1 points

Category: Quantitative Aptitude

In 3 hours, A can go 21 km along the stream and 15 km against the current in the same time. What is the velocity of the stream?

Correct

Explanation:
Let S is the speed of A in still water and C is the velocity of stream
21/(S+C)=3hrs
15/(S-C)=3hrs
From above equations
S=6km/h and C=1km/h

Incorrect

Explanation:
Let S is the speed of A in still water and C is the velocity of stream
21/(S+C)=3hrs
15/(S-C)=3hrs
From above equations
S=6km/h and C=1km/h

Question 6 of 10

6. Question

1 points

Category: Quantitative Aptitude

If the expenditure of companies A & B in 2007 were equal and the total income of the two companies was Rs. 48.8 lakhs, what was the total expenditure of the two companies in 2007?

Correct

Explanation:
Let Expenditure of A and B is X
1.40X+1.65X=48.8
X=16 lakhs

Incorrect

Explanation:
Let Expenditure of A and B is X
1.40X+1.65X=48.8
X=16 lakhs

Question 7 of 10

7. Question

1 points

Category: Quantitative Aptitude

If the income of Company B in 2004 and 2005 were in the ratio of 3:5 respectively, what was the respective ratio of Expenditures of that company in these two years?

Correct

Explanation:
1.60X/1.50Y=3/5
X/Y=9:16

Incorrect

Explanation:
1.60X/1.50Y=3/5
X/Y=9:16

Question 8 of 10

8. Question

1 points

Category: Quantitative Aptitude

Expenditure of company B in 2003 and 2004 are Rs. 25 lakhs and Rs. 30 lakhs respectively. What was the total income of Company B in 2003 and 2004 together?

Correct

Explanation:
Income= Expenditure+ profit
For B income in 2003= 25+25*0.50=37.5
For B income in 2004=30+30*0.60=48
Total income= 37.5+48=85.5 lakhs

Incorrect

Explanation:
Income= Expenditure+ profit
For B income in 2003= 25+25*0.50=37.5
For B income in 2004=30+30*0.60=48
Total income= 37.5+48=85.5 lakhs

Question 9 of 10

9. Question

1 points

Category: Quantitative Aptitude

Total Expenditure of Company A in all the years together was Rs. 76.5 lakhs. What was the total income of the Company in all the years together?

Correct

Explanation:
The expenditures of years are separately not given. So, we cannot calculate total income of company.

Incorrect

Explanation:
The expenditures of years are separately not given. So, we cannot calculate total income of company.

Question 10 of 10

10. Question

1 points

Category: Quantitative Aptitude

Ratio of Expenditure of Companies A and B in 2006 was 7:8 respectively. What was the respective ratio of their incomes in 2006?

Correct

Explanation:
Respective ratio of their incomes in 2006= (7X+7X*0.70)/(8X+8X*0.60)=11.9X/12.8X=119:128

Incorrect

Explanation:
Respective ratio of their incomes in 2006= (7X+7X*0.70)/(8X+8X*0.60)=11.9X/12.8X=119:128