One percent

One percent of all the lights in the city are LED, and the remaining 99% are conventional. Other types are not there. John counted them honestly, but he had counted only conventional. After a good dinner, he registered numbers, and he gave notice that from all the lights in this city, he doesn't count LED contains 2%.

What percentage of lights in a city does John count?

Correct answer:

p =  50 %

Step-by-step explanation:

 0.01n / (n  p/100 n) = 0.02 0.01 / (1  p/100) = 0.02 1 = 2   (1p/100) 0.5 = p/100 p=0.5 100=50%

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