Math

posted by .

lisa cut a log into 4 pieces in 6 minutes. she then cut a smaller log into 8 pieces. how long should the job have taken if she worked at the same rate she had worked when cutting the first log? show all work and prove your answer.

  • Math -

    To cut a log into 4 pieces takes 3 cuts, so each cut took 2 minutes.

    So to cut a log into 8 pieces requires 7 cuts.
    Ignoring the fact that the smaller log should take less time for a cut,
    to make the 7 cuts would then take 14 minutes.

    So the total time for the 10 cuts is 20 minutes.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra 1

    using a constant rate, you can saw a log into 3 pieces in 12 minutes. At the sam constant rate, how long will it take you to cut a siliar log (if the same size) into 6 pieces?
  2. math

    A log is cut into 4 pieces in 12 seconds. At the same rate how long would it take to cut the log into 5 pieces?
  3. math

    Alog is cut into four pieces in 12 seconds. At the same rate, how long would it take to cut the log into five pieces?
  4. Math

    Sam needs to cut a piece of sheet metal into 8 pieces. All the cuts are made in the same direction. It takes him 5 minutes to make each cut. How many cuts will Sam make?
  5. math

    a log that is 50 cm long is cut into 2 pieces one of the pieces is 8 cm shorter than the other one. how long is orginal log and if the original log is cut into equal pieces how long would each piece be
  6. math

    Ruth baked a big cake to sell during the school fair. She cut the cake into many equal pieces. She sold two- thirds of the pieces. She gave half of the remaining pieces to her friends. She then had 6 pieces left to bring home. Into …
  7. Math

    Nick pulled pizza out of the oven and cut it into four equivalent pieces he ate two of them.His sister came in and cut one of the remaining pieces into three smaller equivalent pieces she ate two of the small pieces .what fraction …
  8. Math

    OK I need help please I think it's 7 but not sure. If a circle is cut into 2 pieces. A triangle in 4 pieces ,a square into 5 pieces, what is next shape and how many pieces will be cut?
  9. Math

    Aaron makes model airplanes using balsa wood. He has 14-and-35 inch strips of wood to cut into smaller pieces for wings. He wants to cut the strips into pieces of the same length. What is the longest whole number length he can cut?
  10. English

    1. Peel the potatoes and cut them in pieces. 2. Peel the potatoes and cut them into pieces. 3. Peel the potatoes and cut them in three pieces. 4. Peel the potatoes and cut them into three pieces. ........................... Are they …

More Similar Questions