Question

carpenter Cuts off from a Plank of wood 7 by 13 of its length and then 2 by 3 of what remains if the remaining piece is 4whole 1by2 m long find the original length of the plank

Answer 1

Answer:117/8

Step-by-step explanation.

Let plank be x.

7/13x of plank is cut. So remaking is 6/13x.

Now,

2/3 of what remains. ie. 6/13.

So 2/3×6/13x= 4 1/2

2/3× 6/13x = 9/2

4x/13 = 9/2

8x= 117

X = 117/8.

Hope you understood....