If you would like to know what percent of Lisa's net income is her rent payment, you can calculate this using the following steps:
x% of $740 is $200
x% * 740 = 200
x/100 * 740 = 200 /*100/740
x = 200 * 100 / 740
x = 27.03%
x = 27%
The correct result would be c. 27%.