They sold 50 pounds in January.
To find this you just need to divide 250 by 5 since the amount sold in May is 5 times more.
Hope this helps :)
It depends how you name the sides of triangle.
Look at picture at the result.

PS. Sorry for my terrible drawing but I did it as fast as possible :)
C!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
picturr is not visible to me