If x, y and z are three sum of money such that y is the simple interest on x and z is the simple interest on y for the same time and at the same rate of interest, then:
Answer & explanation
Correct answer: option 4
Let rate = R and time = T
y = \(\frac{x x R X T}{100}\) ---(i)
z = \(\frac{y x R X T}{100}\) ---(ii)
Dividing eq. (i) and (ii)
\(\frac{y}{z}\) = \(\frac{x}{y}\)
⇒ y² = xz