If a Wenzhou orange costs 7 coins, a green orange 3 coins, and 3 golden oranges cost 1 coin, how many oranges of the three kinds will be bought?
Kung ang isang Wenzhou orange gastos 7 barya, isang green orange 3 barya, at 3 ginintuang dalandan cost 1 barya, kung gaano karaming mga dalandan ng tatlong uri ay bumili?