how do I solve these?

Required information [The following information applies to the questions displayed below.] Shown here are condensed income statements for two different companies (assume no Income taxes). 5. What happens to each company's net income if sales decrease by 40% ? Note: Round your answers to nearest whole percent. Required information [The following information applies to the questions displayed below.] Shown here are condensed income statements for two different companles (assume no income taxes). 4. What happens to each company's net income if sales decrease by 20% ? Note: Round your answers to nearest whole percent. Required information [The following information applies to the questions displayed belaw.] Shown here are condensed income statements for two different companles (assume no income taxes). 3. What happens to each company's net income if sales increase by 40% ? Note: Round your answers to nearest whole percent. Required information [The following information applies to the questions displayed belaw.] Shown here are condensed income statements for two different companies (assume no income taxes). 2. What happens to each company's net income if sales increase by 30% ? Note: Round your answers to nearest whole percent