Problema Solution
In sunlight, a vertical yardstick casts a 1 ft shadow at the same time that a nearby tree casts a 15 ft shadow. How tall is the tree?
Answer provided by our tutors
1 yard = 3 feet
let 'h' be the height of the tree
the 3 ft yardstick to 1 ft shadow = the height of the tree h to 15 ft shadow
3 : 1 = h : 15
3/1 = h/15
h/15 = 3/1
h/15 = 3 multiply both sides by 15
h = 3*15
h = 45 ft
the tree is 45 ft tall.