Question

A trekker climbs 0.4 km in 40 minutes.how long will she take to climb 2 km?​

Answer 1

As we can know that we have to multiply 0.4 km to 5 to get 2 km.

So we have to also multiply 40 to 5 the we will get answer 200 minutes.

Thus she will take 200 minutes to climb 2 km.

Answer 2

Answer:

40(5) = 200 minutes

Explanation:

Set up a proportion:

40 is to 0.4 as x is to 2

40:0.4::x:2

.4x = 2(40)

.4x = 80

x = 80/.4

x = 200 minutes or 3 hours 20 mins

If the set up above doesn't make sense to

you, set it up as a fraction and cross multiply:

40/0.4 = x/2

.4x = 2(40)

x = 200 minutes

Alternately:  See by what factor the distance changed

and change the time by the same factor.

.4x = 2

x = 5

40(5) = 200 minutes