Question. Dale and Andrew had breakfast at a cafe. A slice of toast costs 1, and eggs cost 3 each. Dale had 2 slices of toast and 2 eggs. Andrew had 1 slice of toast and 2 eggs. How much did their breakfast cost?
Answer. 15
What step-by-step reasoning justifies that answer?
Reasoning: The cost of Dale's toast is 2 $1 = $2. The cost of Andrew's toast is 1 $1 = $1. The cost of Dale's eggs is 2 $3 = $6. The cost of Andrew's eggs is 2 $3 = $6. Their breakfast cost $2 + $1 + $6 + $6 = $15.