John did 2/3 of his work in 3 days. How many days would it take to finish the remaining work? Is the answer 2 days?
回答 (4)
He did 2/3 of the work in 3 days.
He has 1/3 of the work left.
1/3 is half of 2/3.
So the remaining work will take ½ of 3.
3/2 days = 1½ days
Answer:
1½ days
No...Just by looking at it you can see that 1/3 of his work was done in a day and a half. He has 1/3 more work to do so it's another day and a half.
Let x be the total # of days to do the work.
(2/3)x = 3, so x = 9/2, or 4 1/2 days.
Since he already worked for 3 days, he
has 4 1/2 - 3 = 1 1/2 days left to finish.
1/3 rd work every 3/2 days.........
收錄日期: 2021-04-18 14:01:23
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