[問題] 請教一題數學
Bill owns a large collection of fishing lures consisting of small, medium,
and large lures that weigh 3, 4, and 5 grams each, respectively. If the
product of the lure weights that Bill sold to his friend is 216,000 grams,
how many medium lures did he sell?
A. 6
B. 5
C. 4
D. 3
E. 2
我看解答是D，不過實在不知道這題到底是要怎麼解
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