Question

Jack drove $60$ miles in one hour. If he maintains his current speed, he will travel a distance of miles in $t$ hours.

Answer 1

Distance covered by Jack in $1$ hour $=60$ miles

$\therefore$ In $t$ hours, distance covered by Jack $=60\times t=60t$ miles

Here, time $t$ is a variable; so the distance covered in $t$ time will also be a variable quantity.