Hello Aspirants,
Welcome to Online Quant Test in AffairsCloud.com. We are starting Railway RRB 2016 and we are creating sample questions in Quant section, type of which will be asked in Railway RRB 2016!!!
 Click Here to View Stratus: Railway RRB 2016 Course
 Railway RRB 2016: Reasoning Test
 Railway RRB 2016: Quants Test
 Railway RRB 2016: General Awareness Test
Help: Share Our Railway RRB 2016 Course page to your Friends & FB Groups
_____________________________________________________________________
Quizsummary
0 of 10 questions completed
Questions:
 1
 2
 3
 4
 5
 6
 7
 8
 9
 10
Information
All the Best
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
Results
0 of 10 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 points, (0)
Categories
 Quantitative Aptitude 0%
 1
 2
 3
 4
 5
 6
 7
 8
 9
 10
 Answered
 Review

Question 1 of 10
1. Question
1 pointsCategory: Quantitative AptitudeA 80 litres solution of milk and water contains 80% milk. 10 litres of this mixture is replaced by 10 litres of milk. What is the percentage of water in the final mixture?
Correct
Explanation:
When 10 litres taken out, solution left = 8010 = 70
So milk left in solution = 80/100 *70 = 56
And water left = (20/100)*70 = 14
now 10 litres of milk poured in, so there is no change in quantity of water, and total mixture again becomes 80l
so water now is 14/80 * 100 = 17.5%Incorrect
Explanation:
When 10 litres taken out, solution left = 8010 = 70
So milk left in solution = 80/100 *70 = 56
And water left = (20/100)*70 = 14
now 10 litres of milk poured in, so there is no change in quantity of water, and total mixture again becomes 80l
so water now is 14/80 * 100 = 17.5% 
Question 2 of 10
2. Question
1 pointsCategory: Quantitative AptitudeA sum of money is lent for 2 years at 20% p.a. compound interest. It yields Rs 43.38 more when compounded semiannually than compounded annually. What is the approximate sum lent?
Correct
Explanation:
P[1 + (r/2)/100]^{4} – P[1 + r/100]^{2} = 43.38
P[1 + (20/2)/100]^{4} – P[1 + 20/100]^{2} = 43.38
Solve, P = 1,800Incorrect
Explanation:
P[1 + (r/2)/100]^{4} – P[1 + r/100]^{2} = 43.38
P[1 + (20/2)/100]^{4} – P[1 + 20/100]^{2} = 43.38
Solve, P = 1,800 
Question 3 of 10
3. Question
1 pointsCategory: Quantitative Aptitude80% of 120 added to 60% of a number is number itself. Find the number.
Correct
Explanation:
(60/100)*x + (80/100)*120 = x
So 96 = (40/100)*x
Solve, x = 240Incorrect
Explanation:
(60/100)*x + (80/100)*120 = x
So 96 = (40/100)*x
Solve, x = 240 
Question 4 of 10
4. Question
1 pointsCategory: Quantitative AptitudeFour years ago, ratio of ages of Arun and Tarun was 9 : 11. 6 years hence the ratio will be 7 : 8 respectively. Find the sum of the present ages of the two.
Correct
Explanation:
9x and 11x
4+6 = 10 yrs
So (9x+10)/(11x+10) = 7/8
Solve, x = 2
Their ages 4 yrs ago – 18 and 22, so after 4 yrs (Or present age) = 22 and 26
So sum = 22+26Incorrect
Explanation:
9x and 11x
4+6 = 10 yrs
So (9x+10)/(11x+10) = 7/8
Solve, x = 2
Their ages 4 yrs ago – 18 and 22, so after 4 yrs (Or present age) = 22 and 26
So sum = 22+26 
Question 5 of 10
5. Question
1 pointsCategory: Quantitative Aptitude50 people start a work working 8 hours each day. After 10 days it was found that only 2/5th of the work was done. How many additional people need to be employed in order to complete the remaining work in 5 days working same number of hours each day?
Correct
Explanation:
Let x people need to be employed to complete remaining work (1 – 2/5) = 3/5
M1*D1*H1*W2 = M2*D2*H2*W1
50*10*8*(3/5) = (50+x)*5*8*(2/5)
Solve x = 100Incorrect
Explanation:
Let x people need to be employed to complete remaining work (1 – 2/5) = 3/5
M1*D1*H1*W2 = M2*D2*H2*W1
50*10*8*(3/5) = (50+x)*5*8*(2/5)
Solve x = 100 
Question 6 of 10
6. Question
1 pointsCategory: Quantitative AptitudeThere is a loss of 40% on an article when it is sold at 3/4th the previous selling price. What is the actual profit/loss% on it?
Correct
Explanation:
Shortcut:
[(4/3)*(10040)] – 100 = 80 – 100Incorrect
Explanation:
Shortcut:
[(4/3)*(10040)] – 100 = 80 – 100 
Question 7 of 10
7. Question
1 pointsCategory: Quantitative AptitudeThere are three pipes A, B and C such that A and B can fill the tank in 20 min. and 30 min. respectively and C can empty it in 24 min. all are opened and after 6 minutes pipe C is closed. In how many minutes the tank will get full?
Correct
Explanation:
Let the tank full in x minutes, then A and B opened for x minutes and C for 6 minutes.
(1/20 + 1/30)*x – (1/24)*6 = 1
(1/12)*x = 5/4
Solve, x = 15Incorrect
Explanation:
Let the tank full in x minutes, then A and B opened for x minutes and C for 6 minutes.
(1/20 + 1/30)*x – (1/24)*6 = 1
(1/12)*x = 5/4
Solve, x = 15 
Question 8 of 10
8. Question
1 pointsCategory: Quantitative AptitudeRs 2210 is lent in two parts, one part at 7% for 4 years and remaining part at 8% for 5 years. After the respective times, the interest received from both parts is same. Find the amount lend at 8%.
Correct
Explanation:
Shortcut: When interests are equal
Parts will be divided in ratio –
1/r1t1 : 1/r2t2
1/7*4 : 1/8*5
1/7 : 1/10 = 10 : 7
At 8% = 7/(10+7) * 2210Incorrect
Explanation:
Shortcut: When interests are equal
Parts will be divided in ratio –
1/r1t1 : 1/r2t2
1/7*4 : 1/8*5
1/7 : 1/10 = 10 : 7
At 8% = 7/(10+7) * 2210 
Question 9 of 10
9. Question
1 pointsCategory: Quantitative AptitudeThere are 4 men and 6 women. In how many ways a group of 5 people can be made containing at least 3 women?
Correct
Explanation:
Case 1: 3 women
6C3 * 4C2 = 120
Case 2: 4 women
6C4 * 4C1 = 60
Case 3: 5 women
6C5 * 4C0 = 6
Add all casesIncorrect
Explanation:
Case 1: 3 women
6C3 * 4C2 = 120
Case 2: 4 women
6C4 * 4C1 = 60
Case 3: 5 women
6C5 * 4C0 = 6
Add all cases 
Question 10 of 10
10. Question
1 pointsCategory: Quantitative AptitudeA man can row 8 km/hr in still water. When the river is running at 4 km/hr, it takes him 4 hrs to row to a place and come back. How far is the place?
Correct
Explanation:
B is speed of boat in still water, R is speed of stream
Time is total time taken for upstream and downstream
Distance = time * [B^2 – R^2] / 2*B
= 4 * [8^2 – 4^2] / 2*8Incorrect
Explanation:
B is speed of boat in still water, R is speed of stream
Time is total time taken for upstream and downstream
Distance = time * [B^2 – R^2] / 2*B
= 4 * [8^2 – 4^2] / 2*8
 Note: We are providing unique questions for you to practice well, have a try !!
 Ask your doubt in comment section, AC Mod’s ll clear your doubts in caring way.
 – E.g: @shubhra or @Yogit Kumar “Hi, Can You Explain 8th Question?”