You divide 42 by 7 which equals 6
$570.60 because 90/100=.90 so multiply that with 634 with .90 you get 570.60
(1073 + 1108 + x) / 3 = 1000
(2181 + x) / 3 = 1000 ....multiply both sides by 3
2181 + x = 1000 * 3
2181 + x = 3000
x = 3000 - 2181
x = 819 <== they would need to earn $ 819 on Sunday
