Part A: divide the # of flyers by the # of friends : 1428 flyers ÷ 14 friends = 102 flyers per friend
102 flyers per friend x $0.25 per flyer for each friend = $25.50 per friend for helping to hand out flyers
Part B: 1428 flyers printed at $0.10 per flyer printed = $142.80 total for printing the flyers
$25.50 per friend x 14 friends = $357.00 total paid to the friends
$142.80 for the flyers + $357.00 for the friends = $499.80 total spent