Click to Chat

1800-1023-196

+91-120-4616500

CART 0

• 0

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
`        A motor boat  covers a distance between the two spots on the river in 9 h and 13 h downstream and upstream respectively . Find the time required  by the boat to  cover the distance in still water .`
one year ago

## Answers : (2)

Khimraj
3008 Points
```							let speed of river is u and boat is v and distance is dthend/(v+u) = 9d/(v-u) = 139v + 9u = d13v – 13u = dso v = 22d/(13*9*2) = 11d/117so required time is d/v = d/(11d/117) = 117/11 = 10.63 hrHope it clears...........
```
one year ago
Saurabh Koranglekar
3303 Points
```							Dear studentlet x be speedof boat in still waterlet y be speed of streamlet d be distance(x+y)9 =d(x-y)13 =d
```
one year ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

## Other Related Questions on Mechanics

View all Questions »

### Course Features

• 101 Video Lectures
• Revision Notes
• Previous Year Papers
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Test paper with Video Solution

### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions