Question

Find the time taken to cover a distance of $120$ km at a speed of $10$ m/sec.

• A. $3$ hrs $20$ min.
• B. $8$ hrs $10$ min.
• C. $5$ hrs $40$ min.
• D. $7$ hrs $10$ min.

Answer 1

The correct option is A $3$ hrs $20$ min.

Speed $=$ Distance/Time

Time $=$ Distance/ Speed

Given, Speed $=10$ m/sec,

Distance $=120$km $=120000$ m

Time $=\frac{120000}{10}$

$=12000$ sec

$=\frac{12000}{3600}$hrs

$=3\frac{1}{3}hrs$ =$3hrs20min$.