A) 56 km/h
B) 64.8 km/h
C) 37.5 km/h
D) 54 km/h
Correct Answer: D
Solution :
\[\frac{P's\,\,\text{rate}}{Q's\,\,\text{rate}}=\]\[\sqrt{\frac{\text{Time}\,\,\text{taken}\,\,\text{by}\,\,\text{Q}\,\,\text{to}\,\,\text{reach}\,\,\text{A}}{\text{Time}\,\,\text{taken}\,\,\text{by}\,\,P\,\text{to}\,\,\text{reach}\,\,\text{B}}}\] \[\Rightarrow \]\[\frac{45}{Q's\,\,rate}=\sqrt{\frac{10}{3}\times \frac{5}{24}}\]\[=\sqrt{\frac{25}{36}}=\frac{5}{6}\] \[\therefore \] \[Q's\,\,rate\]\[=\left[ \frac{45\times 6}{5} \right]\]km /h=54 km/h
You need to login to perform this action.
You will be redirected in
3 sec
