Amelia started a business with Olivia, with their investment Rs. 8000 and Rs. 4000 respectively. If the ratio of their profit share at the end of the year is 7:6, then find that after how many months, Amelia left the business?
a. 6 months
b. 9 months
c. 11 months
d. 5 months
e. 7 months
Sol:
Let Amelia left the business after x months.
Ratio of profit share of Amelia and Olivia in business,
8000 * x : 4000 * 12 = 7:6
8000x/48000 = 7/6
8x = (7 * 48)/6 x = 7 months