Question

21 A stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. How long are the two pieces?

Answer 1

smaller piece length = 2.333 and

larger piece length = 4.666

Explanation:

It is given that,

21 A stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one.

To find the length of two pieces

Le x be the length of smaller part of piece.

Then the length of larger piece = double the smaller piece = 2 * x = 2x

We have total length = 7 inches

Therefore we can write,

x + 2x = 7

3x = 7

x = 7/3 = 2.333

2x = 2.333 * 2 = 4.666

Therefore smaller piece length = 2.333 and

larger piece length = 4.666

Answer 2

2.33 inches and 4.66 inches

Explanation:

2x+x=7 or 3x=7

divide by three and x =2.33

that's for the first one and the second one is twice the size so it'll be 4.66 inches