Question

20) A can run one full round of a circular track in 6 min and B in 15 min. If both A
and B start simultaneously from the same starting point then How many times would
they met in the time B has completed 10 rounds when running in same direction, and
In opposite direction?
a) 15, 10
b) 25, 30
c) 15, 35
d) 35, 10
e) None of these​

Answer 1

Solution :-

→ A time : B time = 6 min : 15 min = 2 : 5

So,

→ A speed : B speed = 5 : 2 { since Time ∝ 1/Speed }

then,

→ When B covers 2 rounds A covers = 5 rounds

→ when B covers 1 round A cover = (5/2) rounds

→ When B covers 10 rounds A cover = (5/2) * 10 = 25 rounds .

therefore,

→ When running in same direction they meets = 25 - 10 = 15 times .

→ When running in opposite direction they meets = 25 + 10 = 35 times .

Hence, Option (C) is correct answer .

Learn more :-

Prakash and Pramod are running along a circular

track having started at the same time from the same

point, in the same d...

https://brainly.in/question/18092491

2 friends decide to race around a circular track of 300 metres. Parvati covers 5 metres per step and finishes the race i...

https://brainly.in/question/25943021