SOLUTION: Sam is sawing a board into 5 pieces. Knowing
that it takes him about 2 minutes to make one
cut, he estimates that the job will take him about 10 minutes.
What error did he mak
Question 734737: Sam is sawing a board into 5 pieces. Knowing
that it takes him about 2 minutes to make one
cut, he estimates that the job will take him about 10 minutes.
What error did he make in his calculation?
A
He underestimated the time he needs to make a cut.
B
He decided that 5 cuts were needed to make the 5 pieces.
Notice that although there are 5 pieces to cut, only 4 cuts
(the red lines) need be made.
B is the answer. He thought he needed to make 5 cuts but he
only needed to make 4.
Edwin