Answer:
She sold 7 shirts
Step-by-step explanation:
The first step is to find out how much Keisha made from shirts we do this be subtracting the amounot of money she made from hats from the total
99 - 36 = 63 now we divide 63 (amount she made from shirts) by 9 (amount each shirt sold for)
63 ÷ 9 =7
Therefore she sold 7 shirts
