Each of the triangles are equal in base length, height, and area. Remember the formula for the area of a triangle. The area of any triangle is 1/2 times the length of the base (which, in the polygon, is the length of a side) multiplied by the height (which is the same as the apothem in regular polygon).
Set it up as a ratio:
mans shadow over mans height (4/6 ) equals flag pole shadow over flag pole height (15/x)
set them to equal each other:
4/6 = 15/x
cross multiply: 4*x =4x, 15*6 = 90
so you have 4x = 90
now divide both sides by 5 to solve for x, which is the height of the flag pole:
x = 90 / 4 = 22.5 feet tall
Day 1: $2.70 is added to the value of the share.
$43.85 + $2.70 = $46.55
Day 2: $2.70 is added to the value of the share.
$46.55 + $2.70 = $49.25
Day 3: $1.10 is subtracted from the value of the share.
$49.25 - $1.10 = $48.15
Day 4: $1.10 is subtracted from the value of the share.
$48.15 - $1.10 = $47.05
Day 5: $4.45 is subtracted from the value of the share.
$47.05 - $4.45 = $42.60
After 5 days, the value is $42.60, which is choice B.
Hope this helps!
