Question
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 1/3rd work in 15 days while 8 girls and the child together can complete two-fifth of the work in 20 days 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 .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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