Mathematics, 09.04.2021 22:40 ellabarzyk128

John is a lamp salesman. He earned commissions of $24,$28,$21,and $30 on the lamps he has sold this week. if he sells one more this week, how much commissions must he earn to average $25 in commissions on lamps sold this week?

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John is a lamp salesman. He earned commissions of $24,$28,$21,and $30 on the lamps he has sold this...