I will mark you brainliest if you answer this!

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

If you answer right ill give brainliest, : )

Simplify the expression. -2/5(10+15m-20n)