Question

Find 10.8 – 20.2 + 11 – (-38.5).

a) 39.1

b) 38.1

c) 30.5

d) 31.7

Answer 1

The calculated answer to the math problem 10.8 − 20.2 + 11 − (−38.5) is 40.1. This is not one of the provided answer choices, indicating a possible error in the choices given.

Step-by-step explanation:

To solve the problem 10.8 − 20.2 + 11 − (−38.5), we need to follow the rules for arithmetic operations, particularly paying attention to the negative signs:

1. Start by subtracting 20.2 from 10.8: 10.8 − 20.2 = −9.4.
2. Add 11 to the result of the first step: (−9.4) + 11 = 1.6.
3. Before adding the last term, remember to change the minus sign to a plus because you're subtracting a negative number, which is the same as adding its positive counterpart: −38.5 becomes 38.5.
4. Finally, add 38.5 to the result of the second step: 1.6 + 38.5 = 40.1.

The correct answer is not listed in the options provided, suggesting there may have been an error or typo in the question or the answer choices. The calculated result is 40.1.