Final answer:
Hayden makes 10 muffins, and together with Ivana's 40 muffins, they make a total of 50 muffins. The equation 4H = 40 helps to solve for the number of muffins Hayden makes.
Step-by-step explanation:
Ivana makes 40 muffins, which is 4 times as many muffins as Hayden makes. To determine how many muffins Hayden makes, we can set up an equation where H represents the number of muffins Hayden makes. Since Ivana makes 4 times as many, we can write the equation as 4H = 40. Solving for H, we divide both sides by 4, resulting in H = 10. Therefore, Hayden makes 10 muffins.
To find the total number of muffins Ivana and Hayden make together, we add Ivana's muffins to Hayden's muffins: 40 + 10 = 50 muffins in total.