The following question have three statements. Study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.
Three persons A, B and C work in a job. In how many days B alone can finish the job?
Statement I: C alone can complete the whole job in 15 days.
Statement II: A and B together can finish the job in 10 days.
Statement III: The time taken by A is equal to the time taken by B and C together.1
Statement II and III are sufficient to answer the question.
2
All the statements together are not sufficient to answer the question.
3
Either statement I or III and statement II are sufficient to answer the question.
4
All the statements are required to answer the question.