Munna received Tk. 3000 as his share out of the total profit of Tk. 4500 which he and Raju earned at the end of one year. If Munna invested Tk. 60000 for 6 months, whereas Raju invested his amount for the whole year, what was the amount invested by Raju?

Question: Munna received Tk. 3000 as his share out of the total profit of Tk. 4500 which he and Raju earned at the end of one year. If Munna invested Tk. 60000 for 6 months, whereas Raju invested his amount for the whole year, what was the amount invested by Raju?

Solution:
Suppose Raju invested Tk. x.
Then, Ratio of their investments will be:
Munna : Raju = 60000 × 6 : x × 12 = 360000 : 12x

ATQ,
360000/12x = 3000/1500
∴ x = 15000