MBA Exam

If 15 men or 24 women or 36 boys can do a work in 12 days working 8 hours a day, how many men should work together with 12 women and 6 boys to do a piece of work 9/4 times the earlier work, in 30 days working 6 hours a day?
Please post the approach.

1) 10
2) 15
3) 12
4) 8

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MBA Other Question

find the sum of all 2 digit no. that give the remainder 3.when they are divided by 7.

1) 686
2) 676
3) 666
4) 656
If the sum of 101 distinct terms in arithmetic progression is zero, in how many ways can three of these terms be selected such that their sum becomes zero?

1) 50
2) 1200
3) 1250
4) 650