Question

Amit and ananthu can do a work in 15 days and 25 days respectively. amit started the work and left after 3 days. ananthu took over and completed the work. in how many days was the total work completed?

Answer 1

total part 75 and amit 3 days works 15

now remains 75-15=60

ananthu working day 60/3
then 20 days

Answer 2

Answer: The total work can be completed in 20 days.

Step-by-step explanation:

Since we have given that

Number of days in which Amit can do work = 15 days

Number of days in which Ananthu can do work = 25 days

But Amit done work for 3 days.

So, Amount of work done by Amit is given by

$\frac{3}{15}=\frac{1}{5}$

Remaining work left to be done by Ananthu is given by

$1-\frac{1}{5}=\frac{4}{5}$

So, it becomes,

$\frac{5}{4}\times x=25\\\\x=\frac{25\times 4}{5}\\\\x=20\ days$

Hence, The total work can be completed in 20 days.