Question 114791
Our equation is {(100p - 4000)/ 100p}= 0.3
Multiply on both sides by 100p.
We get, {(100p - 4000)/ 100p} X 100p = 0.3 X 100p.
That is, 100p - 4000 = 30p     (Since 0.3 X 100 = 30)
That is, 100p - 30p = 4000.
That is, 70p = 4000.
That is, p = 4000/70
That is, p = 57.14.