The skier walked from home to the forest for 3 hours at a speed of 7 km / h. he walked through the forest

The skier walked from home to the forest for 3 hours at a speed of 7 km / h. he walked through the forest at a speed of 6 km / h. how long did he walk through the forest if he walked 39 km.

From home to the forest, the skier walked for 3 hours at a speed of 7 km / h. he walked through the forest at a speed of 6 km / h. how long did he walk
through the forest if you walked 39 km in total
So, in order to make it easier for us to solve the problem, we write down the condition)
v – speed
t – time
S – distance
v from house to forest = 7 km / h
t from home to forest = 3 hours
S -?
v in the forest = 6 km / h
t =?, we denote by x
S -?

Recall the formula
vt = S, use it and find the path from the house to the forest
S from house to forest = 7 * 3 = 21 km
And since
S total = S from house to forest + S through forest
Then, we find S in the forest:
S in the forest = S total – S from house to forest
S in the forest = 39 – 21 = 18 km
Let us express the time from the formula vt = S:
t = S / t
substitute the existing values
t = 18/6 = 3 h
Answer: 3 hours