Problem: a constructor estimates that 10 people can paint mr khans house in 4 days . if he uses 5 people instead of 10 , how long will they take to complete the job ?
Rationale: "explanation : use formula for a work members ã — days = constant 10 ã — 4 = 5 ã — a a = 8 so answer is 8 days answer : d"
annotated_formula: divide(const_1, multiply(divide(const_1, multiply(const_4.0, 10)), 4))