If there are three sum of money P, Q and R so that P is the simple interest on Q and Q is the simple interest of R, rate % and time are same in each case, then the relation of P, Q and R is given by	Choose the correct choice.
A) P2 = QR B) Q2 = PR C) R2 = PQ D) PQR = 100 E) None of these
P = Q×r×t/100 and Q = R×r×t/100   ⇒ P/Q=Q/R=r×t/100   ∴ Q2 = PR.   Answer Q2 = PR
<result>B</result>
If there are three sum of money P, Q and R so that P is the simple interest on Q and Q is the simple interest of R, rate % and time are same in each case, then the relation of P, Q and R is given by