If the price of share A was Rs.10 more, 50 less shares can be pruchased by investing Rs.x. If the price of A was Rs.20 less, 25 more shares can be purchased by investing Rs.x. Find the ratio of the price of each share and the number of shares purchased.
A. `3:5`
B. `5:3`
C. `2:5`
D. `5:2`