tristan = $49,000
evan=$34790 
  you can do this two ways:
Find what is 29% of 49,000:
   29/100 x 49,000 = 14,210
   Then, minus it from 49,000: 
   49,000-14,210=34790
   Evan earns $34790
The second way to do this is by using a multiplier:
First, minus 29 from 100:
100-29=71 
Then, convert it to a multiplier by dividing by 100:
71/100=.71 
.71 is now your multiplier, multiply this with 49,000:
49,000x.71=34790 
You get the same answer as the first method