Harish bought an article for Rs. 520 and sold it to Renu at a loss of 30%, With this amount. Harish bought another article and sold it at a gain of 55%. What is Harish‘s overall gain percentage?

Correct option is B

​Given:

Article bought for Rs. 520, sold at 30% loss.

Second article bought, sold at 55% gain.

Formula Used:
Gain/Loss = $$\frac{\text{Net Gain/loss}}{\text{Total CP}} \times 100$$​​

Solution: 

First SP:

$$520 \times \frac{70}{100} = \text{Rs.}\ 364$$​​

Second SP:

$$364 \times \frac{155}{100} = \text{Rs.} \, 564.2$$​​

Net CP: 520, Net SP: 564.2

Gain%$$= \frac{564.2 - 520}{520} \times 100 = 8.5\%$$