Answer
3 $\times$ $10^{8}$
Work Step by Step
You have $\frac{1.5*10^7}{5*10{^-2}}$.Simplify it:
$\frac{1.5}{5}$ $\times$ $10^{7+2}$ -divide the like terms and add the exponents since you are dividing-
0.3 $\times$ $10^{9}$ -move the decimal one place to the right and subtract 1 from the exponent-
=3 $\times$ $10^{8}$
