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Direction : Study the following information and answer the questions that follow:
Five friends A, B, C, D and E completed a work together. The table below shows the percentage of work done by each member and the number of days for which they worked. Using the data given in the table answer the questions that follow. Some fields are missing you have to find these missing values and then answer the question.
Person
Percentage of work done
Number of days worked
A
20%
2
B
33(1/3)%
-
C
4
D
E
10%
3
If D worked for 2 more days than E when A, B, C, D, and E worked together. In how many days will D and Z together complete the work when Z is twice as efficient as E.
6 days
8 days
10 days
12 days
15 days
E works for 3 days;
Hence D worked for 5 days
=> D alone takes 6*5=30 days E alone takes 10*3=30 days
=> Z takes 15 days (twice efficient) together D and Z= 30*15/45= 10 days
Hence, option 4 is the correct answer.
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