$(1$ Calculate the return on equity if security return rate is $20\%,$ loan rate is $15\%,$ reserve pays $1\%$ and the deposit rate is $5\%.(2)$ Calculate the capital ratio and return on equity If equity$=50$ and deposits$=70,$ security return rate is $10\%,$ loan rate is $15\%,$ reserve pays $1\%$ and the deposit rate is $10\%.$