Two boys,A and B,run at 4.5 text{ km/h} and 6 | vedclass

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

Question

(A) First,convert the speeds from $	ext{km/h}$ to $	ext{m/s}$ by multiplying by $\frac{5}{18}$.Speed of $A = 4.5 	imes \frac{5}{18} = \frac{9}{2} \

Vedclass · Accepted Answer

$60$

Vedclass · Answer

(A) First,convert the speeds from $	ext{km/h}$ to $	ext{m/s}$ by multiplying by $\frac{5}{18}$.Speed of $A = 4.5 	imes \frac{5}{18} = \frac{9}{2} 	imes \frac{5}{18} = 1.25 	ext{ m/s} = \frac{5}{4} 	ext{ m/s}$.Speed of $B = 6 	imes \frac{5}{18} = \frac{5}{3} 	ext{ m/s}$.$A$ has a head start of $190 	ext{ m}$,so $A$ only needs to cover $1000 - 190 = 810 	ext{ m}$ to reach the finish line.$B$ needs to cover the full $1000 	ext{ m}$.Time taken by $B$ to finish the race $= \frac{	ext{Distance}}{	ext{Speed}} = \frac{1000}{5/3} = 1000 	imes \frac{3}{5} = 600 	ext{ seconds}$.In these $600 	ext{ seconds}$,the distance covered by $A = 	ext{Speed} 	imes 	ext{Time} = \frac{5}{4} 	imes 600 = 750 	ext{ m}$.Since $A$ was supposed to cover $810 	ext{ m}$ to finish,but only covered $750 	ext{ m}$,the distance by which $B$ wins is $810 - 750 = 60 	ext{ m}$.

Two boys,$A$ and $B$,run at $4.5 \text{ km/h}$ and $6 \text{ km/h}$ respectively. $A$ is given a head start of $190 \text{ m}$. If the total course length is $1 \text{ km}$,by what distance (in $\text{m}$) does $B$ win?

Similar Questions

Raju runs $1250\, m$ on Monday and Friday. On other days,he runs $1500\, m$ except for Sunday (he does not run on Sunday). How many kilometers will he run in $3$ weeks (starting from Monday) (in $.5$)?

In a game of $100$ points,$A$ can give $B$ $20$ points and $C$ $28$ points. The number of points $B$ can give $C$ in a game of $100$ points is:

In a race of $600\, m$,$A$ can beat $B$ by $60\, m$ and in a race of $500\, m$,$B$ can beat $C$ by $50\, m$. By how many $m$ will $A$ beat $C$ in a race of $400\, m$?

$A$ can run $23\, m$,while $B$ runs $25\, m$. In a kilometre race,$B$ beats $A$ by (in $m$):

$A$ and $B$ take part in a $100\, m$ race. $A$ runs at $5\, km/h$. $A$ gives $B$ a start of $8\, m$ and still beats him by $8\, s$. The speed of $B$ is (in $km/h$):

Vedclass Test Series

Exam Paper Generator

Online Exam Module