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Question

In each of the following questions, a question is followed by three statements numbered I, II and III. Read all the statements and answer accordingly which statement/s are sufficient to find the answer .

In how many days 8 boys and 6 girls can complete the work working together?

Statement I: The ratio of efficiency of boy to girl is 3:1

Statement II: 12 girls can complete two fifth of the work in 18 days.

Statement III: 10 boys and a child together can complete 1/3rdwork in 15 days while 8 girls and the child together can complete two-fifth of the work in 20 days

A I and either II or III Correct Answer Incorrect Answer
B Any combination of 2 statements can give the required result Correct Answer Incorrect Answer
C Only I and II Correct Answer Incorrect Answer
D All I, II and III Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

From I and II: We have number of days in which 12 girls can complete the work. So using efficiency we can find the number of days required by boy to complete the work and then the required answer From II and III: We have number of days in which 12 girls can complete the work. So days required by child can be find out, and then by boys. From I and III: We get 3 equations in 3 variables – boy, girls and child. So can be found.

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