PLS HELP ASAP

Merlin wants to make more money selling fake beards this month than
he did last month. All black beards in his shop cost the same amount of
money, and all red beards in his shop cost $25.
Let B represent the number of black beards and R represent the
number of red beards that Merlin can sell to make more money than he
made last month.
20B+25R>350
According to the inequality, how much money did Merlin make last
month, and how much does each black beard cost?
Can Merlin achieve his goal by selling 6 black beards and 8 red
beards? explain why.
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