Question

x,y,z are three sums of money such that y is the simple interest on x and z is the simple interest on y for the same time and rate. Then the relation between x, y and z is

• A. $y^2=zx$
• B. $x^2=yz$
• C. $xyz=1$
• D. none of these

Answer 1

The correct option is A $y^2=zx$

$y=\frac{x\times r\times t}{100}$ ......(i)
$z=\frac{y\times r\times t}{100}$ .....(ii)
$\Rightarrow \frac{y}{z}=\frac{x}{y}$ or $y^2=xz$