Question

2. A piece of string 42 centimeters long is cut into 2 unequal pieces. The longer

piece is 2 times as long as the shorter piece. What is the length of the longer
piece of string?

Answer 1

Answer: 28 cm

Explanation:

x - the length of the shorter piece

2x - the length of the longer piece

Together they are 42 cm long.

Compose te equation:

2x + x = 42

3x = 42

x = 14 cm

The shorter piece is 14 cm, the longer piece is twice longer, 2x, or 2( 14 ).

Two times longer than 14 is 28. The longer piece is 28 cm.