AP ICET 18th Sep 2021 Shift 2 Paper

'A' and ' $\mathit{B}$ ' started a business with their investments in the ratio of $14:15$. If the annual profit was distributed in the ratio $7:6$ and the investment period of ' $\mathit{A}$ ' is for 10 months, then the period of 'B's investment (in months) is