Problema Solution
A plank of wood is 396 cm in length. The plank is cut into two pieces. One piece is 28 cm longer than the other. How long is the shorter piece of wood?
Answer provided by our tutors
let's assum x is longer part, and y is. Then we'll have the system:
x-y=28
x+y=396
2x=28+396
2x=424
x=212
y=212-28=184
which makes 212 and 184.