a can do a work in 20 days and b can do work in 25 days. if they work on it together in how many days they will complete the work About the author Delilah
Answer: 11 days Step-by-step explanation: A’s 1 day’s work = 25 1 Similarly, B’s 1 day’s work = 20 1 A’s and B’s together 1 day’s work 25 1 + 20 1 = 100 4 + 100 5 = 100 4+5 = 100 9 Their 5 day’s work together = 5 x 1 day’s work 1− 100 45 = 100 100 − 100 45 = 100 100−45 = 100 55 Now, this remaining work is done by B. Let B takes x days to complete it. 20 1 ×x= 100 55 ⇒x= 100 55 ×20 ⇒x= 5 55 ⇒x=11 Hence, B will finish the remaining work in 11 days. Reply
Answer:
11 days
Step-by-step explanation:
A’s 1 day’s work =
25
1
Similarly, B’s 1 day’s work =
20
1
A’s and B’s together 1 day’s work
25
1
+
20
1
=
100
4
+
100
5
=
100
4+5
=
100
9
Their 5 day’s work together = 5 x 1 day’s work
1−
100
45
=
100
100
−
100
45
=
100
100−45
=
100
55
Now, this remaining work is done by B.
Let B takes x days to complete it.
20
1
×x=
100
55
⇒x=
100
55
×20
⇒x=
5
55
⇒x=11
Hence, B will finish the remaining work in 11 days.