we know that
the number of coins that each roll contains is
rolls of quarters-------> 40 coins
rolls of Dimes---------> 50 coins
rolls of nickels------> 40 coins
four rolls of quarters------> 4*40*$0.25-----> $40
three rolls of Dimes-----> 3*50*$0.10------> $15
six rolls of nickels-------> 6*40*$0.05-----> $12
total=[40+15+12]------> $67
the answer is
$67