7. The cost price of an article is Rs.1200 and the selling price is 5 times of its cost price. i. Find the selling price of the article? ii. Gain or Loss percent.

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels