Answer: The short piece is 29.6 cm long and 32.6 cm long.
Step-by-step explanation:
Let x = length of short pieces , y = lengthof longer pieces.
y=x+3 (i)
As per given,
3x+2y=151 (ii)
Substitute value of y from (i) in (ii), we get
[tex]3x+2(x+3)=151\\\\\Rightarrow\ 3x+2x+3=151\\\\\Rightarrow\ 5x=148\\\\\Rightarrow\ x=\dfrac{148}{5}=29.6[/tex]
Put value of in (i), we get
y=29.6+3= 32.6
Hence, the short piece is 29.6 cm long and 32.6 cm long.