Last year frank had a total income of $58,800. he sold a house and made a profit of $27,940. he also had monthly income of $80 from investments. frank works 25 hours per week as an hourly employee. how much more an hour would frank had to have earned last year in order to have a total income of $59,970? a. $0.63 b. $0.72 c. $0.80 d. $0.90

First you subtract the non-hourly income from the old total and the new total:
$58,800 - $27,940 - $80*12 = $29,900
Then divide this by the total number of hours he worked (25*52) = 
$23/hr
Do the same to the new, prospective income and find the difference.
$59,970 - $27940 - $80*12 = $31,070 
The divided by (25*52) = 
$23.90/hr
Thus, he would have to earn 90 cents more per hour, and the answer would be d. 

Ithink is a. true, but not sure