Math Question to a NYCHA Painter Test

Question

Assume that one gallon of paint, costing $6.25, is able to cover 500 Square feet. If a painter can spread 1.25 gallons per day and receives $60 per day, the cost per 100 square feet for labor and paint for a one-coat application is, most likely,

A) $12 B)$12.10 C) $12.20 D) 12.30

Answer 1

painter paints 625 ft² in one day (1.25 x 500)

painter earns (100 / 500)($60) or $9.60.

paint costs $1.25 (1/5 x $6.25)

For materials and labor I get $10.85.