$3.$ Using their monthly expense table below, please determine how much Kevin and Aaron need to save in their personal emergency funds. Explain. $($Show your math, $2$ accounts: Kevin$$s Personal, Aaron$$s Personal. $)$

Monthly Expenses Personal expenses for Kevin Personal expenses for Aaron

April $-$ November $$4,700$ per month $$4,200$

December$-$March $$5,300$ per month $$5,100$