If 4 sweaters coat $42.72 how much does 9 sweaters cost?
To find out how much 9 sweaters cost, we can divide the cost of 4 sweaters ($42.72) by the number of sweaters (4) and then multiply it by the new number of sweaters (9).
Cost of 1 sweater = $42.72/4 = $10.68
Cost of 9 sweaters = $10.68 x 9 = $96.12
Therefore, 9 sweaters cost $96.12.