To find the time taken by the fourth team member, subtract the total time of the first three team members from the overall team time:

1. Add the times of the first three team members:
   \[46.685 + 48.869 + 49.33 = 144.884 \text { seconds} \]
2. Subtract this sum from the total team time:
   \[190.729 - 144.884 = 45.845 \text { seconds} \]

Supplemental Knowledge

Solving problems involving the addition and subtraction of decimals is a fundamental arithmetic skill. This type of calculation is essential in various real-world scenarios, such as determining total times, costs, or measurements.

1. Adding Decimals:
   • Align the decimal points and add each column of digits.
   • Carry over if the sum exceeds 9 in any column.
2. Subtracting Decimals:
   • Align the decimal points and subtract each column of digits.
   • Borrow from the next column if necessary.

Practical Insights

Imagine organizing a relay race and need to calculate each team member's contribution towards total time. Accurate addition and subtraction ensure you can accurately evaluate individual performance as well as overall team results effectively.

For more help with arithmetic problems or other mathematical topics, check out UpStudy’s live tutor question bank or Decimals calculator! These resources provide detailed explanations and practical examples tailored to your learning needs.
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