Question

A fast train covers $320$ km in $3$ hours $20$ minutes. How much time will it take to cover a distance of $90$ km ?

• A. $76.25$minutes
• B. $56.25$minutes
• C. $36.25$minutes
• D. None of these

Answer 1

The correct option is B $56.25$minutes

$320km⟶$ in $3hrs20$ minutes

$320km⟶$ in $200$ minutes

$1km⟶$ in $\frac{200}{320}$ minutes

$90km⟶$ in $\frac{200}{320}\times 90$ minutes

Time $=\frac{5}{8}\times 90$ minutes $=56.25$ minutes.