P's salary is 20% lower than Q's salary which is 20% lower than R's salary. By how much percent is R's…
P's salary is 20% lower than Q's salary which is 20% lower than R's salary. By how much percent is R's salary more than P's salary?
48.75%
56.25%
60.50%
62.25%
Solution
Let R's salary be Rs. 100. Then Q = 80% of 100 = Rs. 80, and P = 80% of 80 = Rs. 64. R's salary exceeds P's by $\dfrac{100 - 64}{64} \times 100 = \dfrac{36}{64} \times 100 = 56.25\%$.