Answer
$3\%$
$1.2\%$
Work Step by Step
We have:
Initial workforce: $42,000$
Increase: $1,260$
The percentage increase in supply will be:
$\frac{1260}{42000}\times 100=3\%$
We determine the expected wage decline:
$\frac{4}{10}\times 3=1.2\%$