Question

A carpenter cuts off from a plank 5 1/2 of its length and then 6/7 of what remains. If the remaining piece is 2 1/2 m long Find the original length of the plank.

Answer 1

Answer:I just want point by the way

Step-by-step explanation:

Cut 5/12 of his lenght

remain 7/12 of his lenght

7/12*L - 6/7 *7/12*L=2 1/2 m

7/12*L(1-6/7)=7/12*L(7/7-6/7)=7/12*L*1/7=L/12 =2 1/2

⇒L=2 1/2 m *12=5/2*12=30 m

Original length was 30 m

Answer 2

let the carpenter find out what happens next