Example 18 A boat goes 6 km/h in still water but it takesthrice as muc

1.	Example 18 A boat goes 6 km/h in still water but it takesthrice as much time in going the same distance against thecurrent. The speed (in km/h) of current is
Answer» 18km/h , is that answer? Speed of boat in still water, x = 6 km/h Let speed of the stream = y km/h Downstream speed =(6+y)km/h Upstream speed =6−ykm/h According to Question 3(Distance/6+y)=(Distance/6−y)=>3/6+y=1/6−y 6+y=18−3y 4y=12 y=3 ∴Speed of stream = 3 km/h. 2 km/h. is it the ri8 ans ??

Example 18 A boat goes 6 km/h in still water but it takesthrice as much time in going the same distance against thecurrent. The speed (in km/h) of current is

Answer»

18km/h , is that answer?

Speed of boat in still water, x = 6 km/h

Let speed of the stream = y km/h

Downstream speed =(6+y)km/h

Upstream speed =6−ykm/h

According to Question

3(Distance/6+y)=(Distance/6−y)=>3/6+y=1/6−y

6+y=18−3y

4y=12

y=3

∴Speed of stream = 3 km/h.

2 km/h. is it the ri8 ans ??