Answer
Naturally occurring gallium has the following percent of its isotopes:
$\%$ of $^{69}Ga = 60.11\%$
$\%$ of $^{71}Ga = 39.89\%$
Work Step by Step
$Ar(Ga) = 69.723amu$
Mass of $^{69}Ga=68.925580amu$
Mass of $^{71}Ga=70.9247005amu$---
Let's assume that the fraction of $^{69}Ga$ is equal to $x$, $0
