Answer:

Step-by-step explanation:
From the question we are told that:
Cost Price 
Sale Price 
Generally the equation for Profit P is mathematically given by



Therefore as a percentage
Percentage Profit X is given as


5x (-7)y=4
y=-4/35
5x=4
x=4/5
(x, y) = (4/5, 4/35)
Answer:
A. 11.4
Step-by-step explanation:

Data:
P = 7
r = 0.07
Calculation:
