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Nadine had 20 minutes to do a three-problem quiz. She spent 10 7/10 minutes on question A and 6 2/5 minutes on question B. How much time did she have left for question C?

Sagot :

She has 2 minutes and 54 seconds left for question C.

20 minutes total

10 minutes and 42 seconds on question A
6 minutes and 24 seconds on question B
= 17 minutes and 6 seconds spent on both questions

20 minutes minus 17 minutes and 6 seconds = 2 minutes and 54 seconds