The probability David is early to school is 0.1 and he is late 4 out of 10 times. What is the probability he is on time?
1 answer:
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Answer: The answer is: " 72 words per minute. "
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Step-by-step explanation:
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This is a "unit rate" problem.
We want to solve for/ find the number of words PER single minute.
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Given 48 words per (2/3) minute;
How many words per (one) minute?
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The answer is {48 ÷ (2/3) } words per minute:
Note: dividing by a number is the same as multiplying by the reciprocal (inverse) of that particular number:
Hence:
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The answer is {48 * (3/2) } words per minute:
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Write as:
" " ;
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The "48" can be changed to "24" ; and the "2" can be changed to "1" ;
→ {Since: "48 ÷ 2 = 24 "} ;
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And we have:
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" " ;
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The answer is: " 72 words per minute ."
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Hope this is helpful to you!
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