Niamul, Sabbir, and Mosharaf started a shop by investing Tk 10500, Tk 7000, and Tk 3500 respectively. At the end of the one year, the profit earned was distributed. If Sabbir's gained a profit of Tk 2400, what would be Niamul gain?

Question: Niamul, Sabbir, and Mosharaf started a shop by investing Tk 10500, Tk 7000, and Tk 3500 respectively. At the end of the one year, the profit earned was distributed. If Sabbir's gained a profit of Tk 2400, what would be Niamul gain?

Solution:
Let the total profit be Tk x

Now,
Niamul : Sabbir : Mosharaf = 10500 : 7000 : 3500 = 3 : 2 : 1

Sabbir's profit = x × (2/6) = x/3

ATQ,
x/3 = 2400
⇒ x = 7200

Niamul's profit = 7200 × (3/6) = 3600 Tk