b $)$ ?What percentage improvement is needed in the sales strategy for profit to improve to $ $20,000?$ ?What must sales be for profit to improve to $ $20,000?$

An increase of $\%$ ?in sales is required to yield a profit of $ $20,000,$ ?for a new new level of sales of $

$($ Enter your response for the percentage increase to one decimal place and enter your response for the new sales as a whole number. $)$