Question

The cost price of an article is rupees X and is sold at a profit of X + 10% find the cost price of an article if its selling price is rupees 2 X - 20

Answer 1

2x - 20 = x + 0.1x
x - 0.1 x = 20
0.9 x = 20
x = 20 / 0.9 = 20 * (100/90) = 22.22

Answer 2

Answer:

22.22

Step-by-step explanation:

selling price = 2X - 20

profit = X + 10% = X + 0.1*X

2X - 20 = X + 0.1*X

X - 0.1*X = 20

0.9*X = 20

X = 20 / 0.9

= 20 * (100/90)

= 22.22