Correct Answer - Option 1 : C
Given:
Selling price = Rs. 910
And profit = 30%
Another Selling price = Rs. 180
And loss = 10%
Formula used:
Profit = Cost price – Selling price
Profit% = (Profit × 100)/Cost price
Cost price = [{100/(100 + profit %)} × Selling price]
Cost price = [{100/(100 – loss %)} × Selling price]
Calculation:
According to the question:
⇒ CP of first Pen drive = [{100/(100 + 30%)} × 910
⇒ CP = [(100/130) × 910]
⇒ CP = Rs. 700
Again,
⇒ CP of second Pen drive = [{100/(100 – 10%)} × 180
⇒ CP = [(100/90) × 180]
⇒ CP = Rs. 200
Total CP = (700 + 200) = Rs. 900
Total SP = (910 + 180) = Rs. 1090
Profit = (1090 – 900) = Rs. 190
Profit % = (190/900) × 100
⇒ 19/9 = 21.11%
∴ Total profit is 21.11%.