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audreydalekshed
29.10.2019 •
Mathematics
Eli takes a typing test and types all 240 words in 1 10 hour. he takes the test a second time and types the words in 1 12 hour. was he faster or slower on the second attempt? complete the explanation.
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Ответ:
"faster"
Step-by-step explanation:
Let's put the rates of Eli in WORDS PER MINUTE (the normal measure for typing).
First, we need to convert 1/10th of an hour to minutes. Since there are 60 minutes in an hour, we need to multiply 1/10 with 60. So we have:
1/10 hour = 1/10 * 60 = 6 minutes
Now, converting 1/12th of an hour to minutes in the similar manner, we have:
1/12 hour = 1/12 * 60 = 5 minutes
Hence, first time his wpm (words per minute) is 240/6 = 40 wpm
Also, second time his wpm (words per minute) is 240/5 = 48 wpm
2nd time he was faster (since 48 wpm is greater than 40 wpm).
He was faster on his second attempt.
Ответ:
Unitary method question 1) If the cost of 32 copies is Rs 960, how much more cost is of 3 dozen copies ?