UP Police Constable Exam Model Paper 5

Given:
Investment of Priti and Shobha respectively $=$ Rs. 12,240 and Rs. 20,400
Shobha left after 7 months
Investment of Tina after she joined $=$ Rs. $4080+$ Shobha's investment
Profit share of Tina $=$ Rs. 23,940
Concept used:
As we know. Profit is directly proportional to (Investment $\times$ Time)
Calculation:
Investment of Tina $=$ Rs. $\left(4080+20,400\right)=$ Rs. 24,480
Ratio of the profit share of Priti, Shobha and Tina $=12240\times 12:20400\times 7:24480\times 5$
$\Rightarrow 36:35:30$
So, $30=$ Rs. 23,940
Then, $101=$ Rs. $\left(23,940/30\right)\times 101$

$\therefore$ Total profit of the year was Rs. 80,598