Question

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:

Answer 1

The correct answer is: one piece 14/3 inches and second piece 7/3 inches

Explanation:

Let's marked variables as x and y

Now we have that is:

x + y = 7 and y = 2 x

When we replace y in the first equation we get:

x + 2 x = 7 => 3 x = 7 => x = 7/3

Now we will replace x in the y = 2 x and get:

y = 2 · 7/3 = 14/3

x = 7/3 and y = 14/3

God with you!!!