1.

X and Y stared a business with capitals `₹20000` and `₹ 25000`. After feq months Z joined them with a capital of `₹30000`. If the share of Z in the annual profit of `₹50000` is `₹14000`, then after how many months from the beginning did Z join ?A. 7B. 6C. 3D. 5

Answer» Correct Answer - D
Let the investments of X,Y and Z respectively be `20000,25000 and 30000`
Let the investment period of Z be x months.
Ratio of annual investments
`(20000xx12):(25000xx12):(30000xx x)=8:10:x`
The share of Z in the annual profit of `₹ 14000`
`((x)/(x+18))xx 50000=14000`
`x=7` months
So, Z joined in the business after `12-7=5`months.


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