Problem: 45 workers work 8 hours to dig a hole 30 meters deep . how many extra workers should be hired to dig another hole 35 meters deep by working for 6 hours ?
Rationale: "45 workers * 8 hours / 30 meters = x * 6 / 35 x = 70 total workers 70 - 45 = 30 new workers the answer is c ."
annotated_formula: subtract(multiply(multiply(45, divide(8, 6)), divide(35, 30)), 45)