Question

Mrs.Roberts charges 25 for a basic cake that serves 12 people. If you want a large cake, it costs an additional $1.25 per serving. Write equation for the total cost or a cake, where y represents total cost and x represents the number of additional servings. How much would a cake that serves 20 people cost?

Answer 1

The total cost of a cake that serves 20 people is $35.

Step-by-step explanation:

• Total cost = y
• Number of additional servings = x
• The number of additional servings = 20 - 12 = 8. (x=8)

The equation can be formed as:

• Total cost = basic cost + (No. of additional serving $\times$ cost per additional serving)
• y = 25 + x1.25
• Substitute x=8 in the above equation
• y = 25 + 8(1.25)
• y =25+10
• y = 35

Therefore, the total cost of a cake that serves 20 people is $35.