Question

How do you do this?

Answer 1

Town 1 and Town 2 are situated 7 km apart on the bank of a river. The school and the church are 2 km apart situated on the other bank of the river. The market is situated 4 km away from the school, as shown below.

How far is the school from Town 1?

Answer 2

I helped someone with this a little while ago. Check out http://openstudy.com/study#/updates/4fbdb36ee4b0c25bf8fc0955

Answer 3

property of similar triangle
the ratio of sides is 7/2
so school to town 1 / school to market=7/2
keeping values
x/4=7/2
x=14