Ajay completed 2/7th of a piece of work in 14 days. How many days will he take to complete the remaining work.?
回答 (10)
2017-08-09 3:22 pm
Method 1 :
Let d be the number of days taken to complete the remaining work.
(14 days) : (d days) = (2/7) : [1 - (2/7)]
14 : d = (2/7) : (5/7)
14 : d = 2 : 5
2d = 70
d = 35
Hence, number of days taken for the remaining work = 35 days
====
Method 2 :
Number of days taken for the whole work
= 14 ÷ (2/7) days
= 14 × (7/2) days
= 49 days
Number of days taken for the remaining work
= (49 - 14) days
= 35 days
Let d be the number of days taken to complete the remaining work.
(14 days) : (d days) = (2/7) : [1 - (2/7)]
14 : d = (2/7) : (5/7)
14 : d = 2 : 5
2d = 70
d = 35
Hence, number of days taken for the remaining work = 35 days
====
Method 2 :
Number of days taken for the whole work
= 14 ÷ (2/7) days
= 14 × (7/2) days
= 49 days
Number of days taken for the remaining work
= (49 - 14) days
= 35 days
2017-08-09 5:17 pm
1/7 of the work takes 7 days
7/7 of the work takes 49 days
Answer 35 more days
7/7 of the work takes 49 days
Answer 35 more days
2017-08-09 8:50 pm
2/7______________14 days
1/7_______________7 days
5/7______________35 days to complete
1/7_______________7 days
5/7______________35 days to complete
2017-08-09 4:32 pm
(2/7)x = 14
x = 14 * (7/2)
x = 49 --> Total days
Remaining days = 49 - 14 = 35 days
x = 14 * (7/2)
x = 49 --> Total days
Remaining days = 49 - 14 = 35 days
2017-08-09 4:15 pm
Ajay completed 2/7th of a piece of work in 14 days.
He will take 35 days to complete the remaining work.
He will take 35 days to complete the remaining work.
2017-08-09 3:52 pm
A did (2/7)w in 14d. So he can do (1/7)w in 7d. To complete w, A must do (5/7)w. This will
take him 5*7d = 35d.
take him 5*7d = 35d.
2017-08-09 3:21 pm
35 to complete the remainder but 49 total
2017-08-09 5:12 pm
2/7 of work in 14 days.
Therefore he would complete 1/7 of work in 7 days.
7 x 7 = 49 days.
Therefore he would complete 1/7 of work in 7 days.
7 x 7 = 49 days.
2017-08-09 3:34 pm
49 days.
2017-08-09 3:12 pm
49 days.
收錄日期: 2021-04-24 00:37:36
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170809071103AAi8DW8