J is 25% less than P and 20% less than T. T is r% less than P. What is the value of r?  Select the correct option:  A) 93.5  B) 90  C) 6.75  D) 6.25  E) 2

Rationale: "usually we can solve every question of this type by choosing appropriate value of the variable and deriving the value of other related variables . let , p = 400 then j = ( 75 / 100 ) * 400 = 300 also j = ( 80 / 100 ) * t i . e . t = 300 * 100 / 80 = 375 and t = [ 1 - ( r / 100 ) ] * p i . e . 100 - r = 100 * t / p = 100 * 375 / 400 = 93.75 i . e . r = 6.25 answer : option d"
Answer: D