Question

What is the answer to this

Answer 1

umm I don't know hehe oops

Answer 2

Length of old board = 68.2cm

Explanation:

Let old board length be x

Given new board is 120 % longer than old board = x + 120% of x

Length of new board = 150cm

Therefore,

x + 120% of x = 150

`x + (120)/(100) x = 150\\\\x + 1.20x = 150\\\\2.2x = 150 \\\\x = 68.18 = 68.2cm`