Question

two bike riders ride in opposite direction around a circular track , starting at the same time from same point . bikers a rides at a speed of 6 kmph and biker b rides 4 kmph . if the track has a diameter of 10km ,after how much hours will the bikers meet

Answer 1

Answer:

Step-by-step explanation:

Diameter of the circular track=10 km

Its radius=D/2

=10/2 km

=5 km

So total distance (circumference) of circular track=$2\pi r$

$=2*\frac{22}{7} *5\\\\=\frac{44}{7} *5\\\\=\frac{220}{5} \: km$

Biker A's speed=6 km/h

Distance=220/5 km

So, time taken=distance traveled/time taken

=220/5 km/6 km/h

=22/3 hours

Now, biker B's speed=4 km/h

Distance=220/5 km

So, time taken=distance traveled/time taken

=220/5 km/4 km/h

=11 hours

Now, total time taken=22/3 hours+11 hours

=7.33 hours+11 hours

=18.33 hours (approx)

So, the time taken taken by both the bikers to meet again=$\huge{\bigstar{\boxed{\boxed{\boxed{\bold{\underline{\underline{\underline{18.33\: hours.}}}}}}}}}$

NOTE:- THE ANSWER IN THESE TYPE OF QUESTIONS IS ALWAYS APPROXIMATE.SO IN THE SAME WAY HERE, THE ANSWER THAT CAME IS ALSO APPROX.

HENCE,THE ANSWER IS CORRECT.