Ask Question
4 October, 12:42

A lamppost casts a shadow of that is 15 yards long. A 3-foot-tall mailbox casts a shadow that is 5 yards long. How tall is the lamppost?

+4
Answers (2)
  1. 4 October, 13:43
    0
    Use the proportion x/15 = 3/5 (height of object/length of shadow) and cross multiply. 5x = 45. divide both sides by three and x=9.
  2. 4 October, 15:34
    0
    1/5 = x/15 solve for x

    15 * 1/5 = 15/5 = 3

    it is 3 yards tall

    (I changed the 3 feet to 1 yard to keep the units the same)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “A lamppost casts a shadow of that is 15 yards long. A 3-foot-tall mailbox casts a shadow that is 5 yards long. How tall is the lamppost? ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers