3 threads are attached together. The length of the first thread is 12.45 m and the length of the second thread is 8.64 m. The total length of the three threads is 30 m. What is the length of third thread?

8.91 m

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21.09 m

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20.19 m

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9.09 m

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Solution

The correct option is A 8.91 m
Length of first thread = 12.45 m
Length of second thread = 8.64 m

Length of two threads together = 12.45 m + 8.64 m
Total length of three threads together = 30 m

Length of third thread = 30 m - 21.09 m
Thus, the length of third thread is 8.91 m.

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3 threads are attached together. The length of the first thread is 12.45 m and the length of the second thread is 8.64 m. The total length of the three threads is 30 m. What is the length of third thread?

The correct option is A 8.91 mLength of first thread = 12.45 m Length of second thread = 8.64 m Length of two threads together = 12.45 m + 8.64 m Total length of three threads together = 30 m Length of third thread = 30 m - 21.09 m Thus, the length of third thread is 8.91 m.

The correct option is A 8.91 m
Length of first thread = 12.45 m
Length of second thread = 8.64 m

Length of two threads together = 12.45 m + 8.64 m
Total length of three threads together = 30 m

Length of third thread = 30 m - 21.09 m
Thus, the length of third thread is 8.91 m.