Question

in100meter race sim coverd 38.2sec karn coverd 42.12sec who is faster nd by how mch

Answer 1

$sim \: coverd \: 38.2sec \: and \: ditance \: 100m \\ speed \: of \: sim = \frac{100}{38.2} \\ = 2.61 \frac{m}{s} \\ sim \: is \: faster \: than \: karn$

Answer 2

Sim is faster .

42.12sec  -38.2sec

=3.92

=By 3.92 sec Sim is faster than Karn.