What number is 2/5 of the distance from (4 1/7) to 10?
回答 (4)
2015-11-02 6:50 pm
✔ 最佳答案
First compute the difference:10 - 4 1/7 = 5 6/7
Then figure out 2/5 of the distance:
(2/5) * (5 + 6/7)
(2/5) * 5 + (2/5)(6/7)
2 + 12/35
= 2 12/35
Then add this to the original number:
4 1/7 + 2 12/35
= 4 5/35 + 2 12/35
= 6 17/35
Answer:
6 17/35
2015-11-02 9:36 pm
convert 4 1/7 to an improper fraction
29/7
10=70/7
the distance from 29/7 to 70/7 is
70/7-29/7 =41/7
1/5 of 41/7 is
(1/5)*(41/7) =41/35
2/5 would be 82/35
add that to the original 49/7
but first find the common denom.
35
49/7=(49*5)/35=245/35
82/35+245/35=327/35
327/35=9.3428...etc
so the mixed number will be
9 x/35
9*35=315
327-315=12
9 12/35
29/7
10=70/7
the distance from 29/7 to 70/7 is
70/7-29/7 =41/7
1/5 of 41/7 is
(1/5)*(41/7) =41/35
2/5 would be 82/35
add that to the original 49/7
but first find the common denom.
35
49/7=(49*5)/35=245/35
82/35+245/35=327/35
327/35=9.3428...etc
so the mixed number will be
9 x/35
9*35=315
327-315=12
9 12/35
2015-11-02 6:45 pm
9
2015-11-02 6:42 pm
What fraction is halfway between 1/7 and 2/5 ... represents the 'distance' between ... number is exactly halfway between 1.7 and 2.5 ...
收錄日期: 2021-04-21 14:50:35
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151102104017AA6ztci