Question

The distance of a planet B from the sun is ${10}^5$ times the distance of a planet A from the sun. If the distance of plnet A from the sun is 420000 km then find the distance of the planet B from the sun and express the answer in the standard form.

Answer 1

Distance of planet A from sun = x

Distance from planet B from sun = y

$y={10}^{3}x$

$x=42000km$

$y={10}^6\times 420000$

$y=42\times {10}^{9}km$