When the amount paid for land is 50000 and the amount paid for expenses is 10000 the balance on the right side of the accounting equation after transaction (b) is

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.