Dusty has a summer lawn-moving business. in one-week, he mows 20 lawns and earns a total of $450.if he charges the same amount for each amount for each lawn, how much does dusty charge to mow a lawn

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

What is the value of x in the diagram below?

What’s the answer ? use the picture to see the problem