Problem: one copy machine can make 25 copies a minute , and a second copy machine makes 35 copies a minute . if the two copiers work together , how long would it take them to make 4,800 copies ?
Rationale: "total work done by both machines in a minute = 25 + 35 = 60 copies total number of copies required = 6000 time = 4800 / 60 = 80 mins answer e"
annotated_formula: divide(power(35, const_3), add(25, 35))