the cost of a transistor decreases from rs 400 to rs 380 what is the percentage of decrease ?

Answer:

Original Price = Rs. 400

Decreased Price = Rs 380.

So the decreased amount = Rs. (400 - 380) = Rs. 20.

% of decrease = Decreased Amount/Original Amount x 100 = 20/400 x 100 = 5%

Ans: 5%.