IBPS Government Jobs Exams Numerical Ability Boats and Streams

A man can row 28 km upstream and 70 km downstream in 12 hours. Also, he can row 4440 km upstream and 56 km downstream in 14 hours. What is the speed of the man in still water?
1)7 kmph 2)8 kmph 3)9 kmph 4)12 kmph 5)14 kmph

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IBPS Other Question

If 8 men and 5 women can earn Rs. 3390 in 6 days, an 5 men and 7 women can earn Rs. 3600 in 8 days, then in how many days will 7 men and 8 women earn Rs. 6435?
1)9 days 2)11 days 3)12 days 4)13 days 5)15 days In how many different ways can the letters of the word COLLECTION be arranged?
1)453600 2)113400 3)56700 4)5040 5)1260