Question

A man travelled a distance of $50km$ on his first trip. On a later trip, travelling three times as fast, he covered $300km$. Compare the times he took.

• A. $1:2$
• B. $2:3$
• C. $3:4$
• D. $7:9$

Answer 1

Answer: (A)

$1:2$

Let speed be $x\Rightarrow \frac{50}{x}=$time taken.

Also, for later trip $\frac{300}{3x}=\frac{100}{x}=$ time taken.

Hence, ratio is $1:2$.