I need help with the below problem, and also if you could please provide an explanation, i don't understand it that well.

Bad Boys, Inc. is evaluating its cost of capital. Under consultation, Bad Boys, Inc. expects to issue new debt at par with a coupon rate of 8% and to issue new preferred stock with a $2.50 per share dividend at $25 a share.

The common stock of Bad Boys, Inc. is currently selling for $20.00 a share. Bad Boys, Inc. expects to pay a dividend of $1.50 per share next year. An equity analyst foresees a growth in dividends at a rate of 5% per year. Bad Boys, Inc. marginal tax rate is 35%. If Bad Boys, Inc. raises capital using 45% debt, 5% preferred stock, and 50% common stock, what is Bad Boys cost of capital?