Question

1. 69.91 + 30.10 + 87.73 | 2.45

Explanation:

Step1: Add 69.91 and 30.10

$69.91 + 30.10 = 100.01$

Step2: Add the result to 87.73

$100.01 + 87.73 = 187.74$

Step3: Subtract 2.45 (assuming the last part is subtraction, as the notation is unclear but likely an operation)

$187.74 - 2.45 = 185.29$ (If the last part was a typo or different operation, adjust. But with given numbers, this is a common interpretation of the vertical line as an operation separator, likely subtraction here.)

Answer:

185.29 (Note: If the last number was a typo or different operation, the answer may vary. But based on common arithmetic with the given numbers, this is the result of adding the first three and subtracting the last.)