Hello and welcome to exampundit. Here is a set of Data Interpretation on Time & Work for Clerk Mains Exams.
The following set consists 5 questions Data Interpretation on Time & Work with 8 minutes time.
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Here is a set of Data Interpretation Quiz on Time & Work.
Time: 8 Minutes
No. of Questions: 5 Questions
Difficulty: Medium
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Question 1 of 5
1. Question
Study the chart carefully and answer the following questions:
Person No of days they worked % of work done to complete the work A 8 20 B 3 15 C 6 25 D 15 30 E 12 50 Question: X is 25% more efficient than A and Y is as efficient as B. They worked together for 4 days and left the work due to illness. After that D came to help them and completed the remaining work. In how many days D completed the work?
Correct
A works 20% work in 8 days
A works 100% in 8/20 * 100 = 40 days
X is 25% more efficient than A. So X can complete the work in=
125 * D = 100 * 40
D= 32
X can complete the work in 32 days
B works 15% in 3 days
B works 100% in 3/15 * 100 = 20 days
Y can complete the work in 20 days
They worked for 4 days. In these days they worked= 4/32 + 4/20 = 13/40
Remaining work= 1 13/40 = 27/40
D works 30% in 15 days
D worked 100% in= 15/30 * 100 = 50 days
D worked 27/40 work in 15/30 * 50 = 33.75 days
Incorrect
A works 20% work in 8 days
A works 100% in 8/20 * 100 = 40 days
X is 25% more efficient than A. So X can complete the work in=
125 * D = 100 * 40
D= 32
X can complete the work in 32 days
B works 15% in 3 days
B works 100% in 3/15 * 100 = 20 days
Y can complete the work in 20 days
They worked for 4 days. In these days they worked= 4/32 + 4/20 = 13/40
Remaining work= 1 13/40 = 27/40
D works 30% in 15 days
D worked 100% in= 15/30 * 100 = 50 days
D worked 27/40 work in 15/30 * 50 = 33.75 days

Question 2 of 5
2. Question
Study the chart carefully and answer the following questions:
Person No of days they worked % of work done to complete the work A 8 20 B 3 15 C 6 25 D 15 30 E 12 50 Question: In a project a contractor recruited C and D to complete the work. At first C came to do the work but after 6 days C left the work for his urgent work. Then D came and took responsibility to complete the work. In how many days D finished the remaining work?
Correct
C worked 25% in 6 days
C worked 100% in 6/25 * 100 = 24 days
In 6 days C worked 6/24 work
Remaining work= 1 6/24 = 1 ¼ = ¾
D worked 30% in 15 days
D worked 100% in 15/30 * 100 = 50 days
D completed ¾ th part work in ¾ * 50 days = 37.5 days
Incorrect
C worked 25% in 6 days
C worked 100% in 6/25 * 100 = 24 days
In 6 days C worked 6/24 work
Remaining work= 1 6/24 = 1 ¼ = ¾
D worked 30% in 15 days
D worked 100% in 15/30 * 100 = 50 days
D completed ¾ th part work in ¾ * 50 days = 37.5 days

Question 3 of 5
3. Question
Study the chart carefully and answer the following questions:
Person No of days they worked % of work done to complete the work A 8 20 B 3 15 C 6 25 D 15 30 E 12 50 Question: If B, C, D and E divided the work equally, in how many days they finished the work?
Correct
B, C, D and E worked equally. So each person worked 25% of work.
B worked 15% in 3 days
B worked 25% in 3/15 * 25= 5 days
C worked 25% work in 6 days
D worked 30% in 15 days
D worked 25% in 15/30 * 25= 12.5 days
E worked 50% in 12 days
E worked 25% in 12/50 * 25 = 6 days
Total days required= 5 + 6 + 12.5 + 6= 19.5 days
Incorrect
B, C, D and E worked equally. So each person worked 25% of work.
B worked 15% in 3 days
B worked 25% in 3/15 * 25= 5 days
C worked 25% work in 6 days
D worked 30% in 15 days
D worked 25% in 15/30 * 25= 12.5 days
E worked 50% in 12 days
E worked 25% in 12/50 * 25 = 6 days
Total days required= 5 + 6 + 12.5 + 6= 19.5 days

Question 4 of 5
4. Question
Study the chart carefully and answer the following questions:
Person No of days they worked % of work done to complete the work A 8 20 B 3 15 C 6 25 D 15 30 E 12 50 Question: A and D started doing the work. After 10 days they both left and B joined the work. He completed his part of work. Now the remaining work was completed by P in 18 days. In how many days P can complete the whole work?
Correct
A worked 20% in 8 days
A worked 100% in 8/20 * 100= 40 days
D worked 30% in 15 days
D worked 100% in 15/30 * 100= 50 days
In 10 days they worked= 10/40 + 10/50 = 9/20
B completed 15% work
Total work done by three= 9/20 + 3/20 = 3/5
Remaining work= 1 – 3/5 =2/5
2/5 work completed by P in 18 days
P can complete a work in 18 * 5/2 = 45 days
Incorrect
A worked 20% in 8 days
A worked 100% in 8/20 * 100= 40 days
D worked 30% in 15 days
D worked 100% in 15/30 * 100= 50 days
In 10 days they worked= 10/40 + 10/50 = 9/20
B completed 15% work
Total work done by three= 9/20 + 3/20 = 3/5
Remaining work= 1 – 3/5 =2/5
2/5 work completed by P in 18 days
P can complete a work in 18 * 5/2 = 45 days

Question 5 of 5
5. Question
Study the chart carefully and answer the following questions:
Person No of days they worked % of work done to complete the work A 8 20 B 3 15 C 6 25 D 15 30 E 12 50 Question: P is 20% less efficient than B. Q is 50% less efficient than D. R is 50% more efficient than E. In how many days P, Q and R can complete the work together?
Correct
B completes the work in= 3/15 * 100= 20 days
P is 20% less efficient than B. So P can complete work=
80 * D= 100 * 20
D= 25 days
D completes the work in= 15/30 * 100= 50 days
Q is 50% less efficient than D. So Q completes the work=
50 * D= 100 * 50
D= 100 days
E can complete the work= 12/50 * 100= 24 days
R is 50% more efficient than E. E completes work in=
150 * D= 100* 24
D= 16 days
P+Q+R = 1/25 + 1/100+ 1/16 = 45/400 = 9/80
Incorrect
B completes the work in= 3/15 * 100= 20 days
P is 20% less efficient than B. So P can complete work=
80 * D= 100 * 20
D= 25 days
D completes the work in= 15/30 * 100= 50 days
Q is 50% less efficient than D. So Q completes the work=
50 * D= 100 * 50
D= 100 days
E can complete the work= 12/50 * 100= 24 days
R is 50% more efficient than E. E completes work in=
150 * D= 100* 24
D= 16 days
P+Q+R = 1/25 + 1/100+ 1/16 = 45/400 = 9/80
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