Syntel Company Numerical Ability Time and Work

One man,3 women and 4 boys can do a piece of work in 96hrs, 2 men and 8 boys can do it in 80 hrs, 2 men & 3 women can do it in 120hr. 5Men and 12 boys can do it in ?
(A) 39 1/11 hrs (B) 42 7/11 hrs ( C) 43 7/11 days (D) 44hrs

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Syntel Other Question

Sam buys 10 apples for $1. At what price should he sell a dozen apples if he wishes to make a profit of 25%? A man sold his tow horses for Rs. 770 each, on one he gained 10% and on the other he lost 10%. The average gain or loss is
a) 100 %
b) 0.96 %
c) 4 %
d) 1 %