Matthew earns $.10 for each local newspaper he delivers twice a week. his brother earns $.25 for delivering each sunday newspaper. they deliver papers to the same number of houses and together they earn $13.95 per week. how many papers does each boy deliver each week? what is the answer?

For this case, the first thing we must do is define a variable.
 x: number of newspapers sold per week.
 We now write the equation for the total of newspapers.
 We have then:
 
 Rewriting we have:
 
 For Mattthew we have:
 
 For his brother:
 
 
 each boy delivers each week about:
 Mattthew: 62
 His brother: 31