QQuestionOther Exams & Certifications
QuestionOther Exams & Certifications
Using a 5 -minute and an 8 -minute hourglass timer, how can you measure 1 minute? Explain your method.
A. Start both hourglasses at the same time. When the 5 -minute hourglass runs out, turn it over. When the 8 -minute hourglass runs out, flip it. When the 5 -minute hourglass runs out again, 1 minute has passed.
B. Start both hourglasses at the same time. When the 8 -minute hourglass runs out, turn it over. When the 5 -minute hourglass runs out, 1 minute has passed.
C. Start both hourglasses at the same time. When the 8 -minute hourglass runs out, 1 minute has passed.
D. Start both hourglasses at the same time. When the 5 -minute hourglass runs out, 1 minute has passed.
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Answer
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Step 1Let's solve this step by step:
Step 2: Understand the Problem
We need to use a 5 -minute and an 8 -minute hourglass to measure exactly 1 minute. This requires careful timing and flipping of the hourglasses.
Final Answer
Option B is the correct method to measure 1 minute using a 5 -minute and an 8 -minute hourglass.
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