solving algebra word problem

Question

Inna needs to mix raisins and peanuts for a trail mix. She wants to make a total of 10 lb of the mix. The peanuts cost $2 per lb and the raisins cost $3.40 per lb. The total value of the trail mix is 28.40. Find the amount of peanuts and raisins she needs to include in the mix.

Answer 1

p represents the amount of peanutrs

10 - p represents the amount of raisins

2p + 3.4(10 - p) = 28.4(10)

Can you solve for p and answer?