Answer:
C. 120%
Step-by-step explanation:
We assume the revenues in 1998 is $100
So, the profit in 1998 would be
= $100 × 10%
= $10
And, in 1999, the revenue is fall by 20%
So, the revenue in 1999 would be
= $100 - $100 × 20%
= $80
And, the profit in 1999 would be
= $80 × 15%
= $12
So, the profit percentage would be
= Profit in 1999 ÷ Profit in 1998
= $12 ÷ $10
= 120%