Correct Answer - Option 3 : 16
Given:
Profit = 20%
Formula used:
Profit = SP – CP
Profit % = (Profit/CP) × 100
Calculation:
Let the SP of the 1 article be Rs 1
Then, SP of x article = Rs x, and SP of 20 articles = Rs 20
Now, A/Q
CP of 20 articles = SP of x articles = Rs x
Now, Profit = 20 – x
Profit % = (Profit/CP) × 100
⇒ 25 = {(20 – x)/x} × 100
⇒ x = 4(20 – x)
⇒ x = 80 – 4x
⇒ 5x = 80
⇒ x = 16
∴ The value of x is 16