X,Y and Z start a venture together.Y and Z invests Rs. 4000 and Rs. 3000 respectively while X invests Rs. 1000 initially and after 6 months withdraws his capital and decides to work as a working partner with 30% stake in the profits.if X gets Rs. 800 at the end of the year ,what was the profit.

3600 ??

Just because I don't care doesn't mean I don't understand!

a, b, c, d, e, f are six positive integers such that : b+c+d+e = 4a c+f=3a c+d+e=2f f=2d e+f=2c+1 "a" is a prime number between 12 and 20. the value of f is_________?

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