Question

If light can travel $31$ times around the world in $4$ seconds, how many times can it circle the world in $10$ seconds.

• A. $124$ times
• B. $66\frac{1}{2}$ times
• C. $82\frac{1}{2}$ times
• D. $77.5$ times

Answer 1

The correct option is D $77.5$ times

In $4$ seconds light can travel $=31times$
Then in $10$ second it can travel$=\frac{31}{4}\times 10=77.5times$