Ineed with the problem in the photo.

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

See attachment below and find the equivalent of tan(∠qsr)