When Alisha goes by car at 50 , km/h,she reac | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Let $T$ be the scheduled time to reach the office.When traveling by car at $50 \, km/h$,the time taken is $T_1 = \frac{25}{50} = 0.5 \, hours = 30

Vedclass · Accepted Answer

$68$

Vedclass · Answer

(A) Let $T$ be the scheduled time to reach the office.When traveling by car at $50 \, km/h$,the time taken is $T_1 = \frac{25}{50} = 0.5 \, hours = 30 \, minutes$.Since she is $5 \, minutes$ late,the scheduled time $T = 30 - 5 = 25 \, minutes$.When traveling by motorbike,she reaches $3 \, minutes$ early,so the time taken is $T_2 = 25 - 3 = 22 \, minutes$.Convert $T_2$ to hours: $T_2 = \frac{22}{60} \, hours = \frac{11}{30} \, hours$.The speed of the motorbike $S = \frac{	ext{Distance}}{	ext{Time}} = \frac{25}{11/30} = \frac{25 	imes 30}{11} = \frac{750}{11} \approx 68.18 \, km/h$.Rounding to the nearest integer,the speed is $68 \, km/h$.

When Alisha goes by car at $50 \, km/h$,she reaches her office $5 \, minutes$ late. But when she takes her motorbike,she reaches $3 \, minutes$ early. If her office is $25 \, km$ away,what is the approximate average speed at which she rides her motorbike? (in $km/h$)

Similar Questions

Two trains start from $P$ and $Q$ respectively and travel towards each other at a speed of $50\, km/hr$ and $40\, km/hr$ respectively. By the time they meet,the first train has travelled $100\, km$ more than the second. The distance between $P$ and $Q$ is (in $km$):

$A$ boy is running at a speed of $p \, km/h$ to cover a distance of $1 \, km$. However,due to the slippery ground,his speed is reduced by $q \, km/h$ $(p > q)$. If he takes $r$ hours to cover the distance,then:

If the length of the train is $700 \, m$ and the length of the platform is $500 \, m$,find the time taken by the train moving at $54 \, km/h$ to cross the platform (in $sec$).

$A$ train $800 \, m$ long is running at a speed of $78 \, km/h$. If it crosses a tunnel in $1 \, minute$,then the length of the tunnel (in $m$) is:

$A$ car covers a distance of $330 \, km$ in a certain amount of time at a speed of $55 \, km/h$. What is the average speed of a bike that covers a distance of $15 \, km$ less than the car in $1 \, hour$ less than the time taken by the car? (in $km/h$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module