"Suppose there are sixty-five workers. Twenty-four of them earn ten cents a day; they are Group Four. Eleven earn twelve cents a day; they are Group Three. Nineteen earn fourteen cents a day; they are Group Two. And eleven earn fifteen cents a day; they are Group One."
"Now, assuming the project lasts forty days, which of these four groups will have the highest total labor cost?"
The moment Ji Huan finished speaking, before Ji Xuelan could even start counting, Ji Liantang blurted out an answer. "Group One costs the most!"
Ji Huan glanced at the abacus in his hand, which he hadn't even touched. "Are you sure?"
Ji Liantang's eyes flickered with doubt, but he gritted his teeth. "I'm sure."
Ji Huan shook her head. "The answer is…"
"Wait!"
Ji Liantang changed his mind before she could finish.
"I remembered it wrong just now. It's Group Four! Group Four costs the most."
Ji Huan asked him again if he was sure.
