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Wednesday, November 16, 2011

Jocelle's Math Question

Chapter 2.3

11.) In every speech in a jiffy means in a very short time in science, a specific value sometimes assigned to a jiffy is 1/100 seconds. Naima can type at 50 words per minute. On average, how many jiffies does she take to type each word?

1/100 secs and 50 words per minute
-1.2 jiffies per second

In one minute there are 60 seconds which equals to 50 words.
60 seconds divide by 50 words

60 ÷ 50 = 1.2

1. Make the problem more simpler by dividing by 1. Multiply the divisor by its reciprocal and the dividend by the same reciprocal.

2. Simply it if possible, but in this case we don't have to simplify it.

Answer: It takes 120 jiffies for Naima to type each word.

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