Financial question compost of 3 parts:

1. Matthews bought 100 Wells Fargo shares for $4/share and received $0.4/share during the time, what is his rate of return for his investment in wells Fargo shares if he sold his shares for $5/share?
2. Matthews bought 100 capital one bank shares for $3/share and received $0.3/share during the time, what is his rate of return for his investment in capital one bank shares if he sold his shares for $3.6/share?
3. Assuming that Matthews portfolio of investment is made up of 45% of wells Fargo shares and 55% of capital shares what is his expected return for the investment in questions 1 and 2 above?

Please, explain how you did the calculations. Thank you!