Question 567858
Let the sales be $x

Pay job 1 --20000 +0.01x

Pay job 2-- 15000+0.02x

earnings to be equal

20000+0.01x=15000+0.02x

20000-15000=0.02x-0.01x

5000= 0.01x
/0.01

x=500,000 

Sales should be $ 500,000 for eranings to be the same

20000+0.01x=15000+0.02x

plug 300000 for x

20000+300000*0.01 ---------15000+0.02*300000

23000-----------21000

Pay job I will earn more

You can work out for $700,000