A square field abcd of side 90m is located that its diagonal ac is from north to south and the corner b is to the west of d
Answers
Step-by-step explanation:
Given A square field abcd of side 90 m is located that its diagonal ac is from north to south and the corner b is to the west of d. Rohan and Rahul start walking along the sides from b and c respectively in the clockwise and anti-clockwise directions with speeds of 8 km/hr and 10 km/hr. Where shall they cross each other the second time.
- Now we have b is moving in clockwise direction and c is moving in anti clockwise direction.
- Therefore the distance between them will be 90 + 90 + 90 = 270 m
- Speed of Rohan will be 8 km / hr = 8 x 5/18 = 20 / 9 m/s
- Speed of Rahul will be 10 km/hr = 25 / 9 m/s
- Since both of them are moving in opposite direction we get
- 20 / 9 + 25/9
- = 45/9
- = 5 m/s
- So first time they will meet after covering 270 m in 270 / 5 = 54 secs
- Therefore they will meet at a point after 30 m from A and 60 m from D.
- Now to meet for second time they need to cover entire 360 m and so they will do it in 360 / 5 = 72 secs.
- So Rohan will cover a distance = 20 / 9 x 72 = 160 m and Rahul will cover a distance of 25/9 x 72 = 200 m
- So 200 + 160 = 360
- Therefore they will meet at 10 m from c and 80 m from b.
Reference link will be
https://brainly.in/question/18045011
Given : A square field ABCD of side 90 m is so located that its diagonal AC is from north to south and the corner B is to the west of D. Rohan and Rahul start walking along the sides from B and C respectively in the clockwise and anti-clockwise directions with speeds of 8 km/hr and 10 km/hr.
To find : Where shall they cross each other second time
Solution:
Complete Question : https://brainly.in/question/19652963
For the 1st time Rohan & rahul will meet after covering total 270 m distance
as they are going in opposite direction from BC
Next time they will meet then they further covered together = 360 m
Hence total Distance traveled = 270 + 360 = 630 m
Total Speed = 8 + 10 = 18 km/hr
Distance traveled by Rohan = (8/18) 630 = 280 m
Distance traveled by Rahul = (10/18) 630 = 350 m
Rahul need to come 10 m more to reach back to C
Hence On BC at a distance of 10 m from C
Option D is correct
On BC at a distance of 10 m from C
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