A and B start a business.  A invests 20% of the total and B invests the remaining. If the total profit at the end of the year is Rs.6500, then find the share of A .

1300

20% = \(\frac{1}{5}\)

              A   :     B

Inv.    :   1   :     4

Profit :    1   :     4        = 5R

*If time is same then investment ratio becomes profit ratio*

ATQ,

⇒  5R = 6500

⇒  1R = 1300

A's profit = 1R = 1 × 1300 = 1300