A wood board 156 centimeters long is cut into three parts. The two longer parts are the same length and are 15 centimeters longer than the shoertest part. How long are the three parts?
wood board 156 centimeters long is cut into three parts. The two longer parts are the same length and are 15 centimeters longer than the shoertest part. How long are the three parts?
Let the shortest part=S
The other two parts=S + 15
S + 2[S + 15] =156
S + 2S + 30 =156
3S=156 - 30 =126 divide both sides by 3
S=126/3
S=42 cm-the shortest wood board
42+15=57cm-the two other wood boards, so that:
42 + 57 + 57 =156 cm
