Question

20 students are assigned the task to clean up a local park in 10 days. After 8 days, 12 students leave the work due to a viral infection. How many more days will the remaining students take to complete the task?

Answer 1

Answer:

2 days

Step-by-step explanation:

8 students

answer

Answer 2

Answer:

Required time is $6 \frac{1}{4}$

days.

Step-by-step explanation:

Total number of students are 20.

They take 10 days for complete the task.

So, 20 students take 10 days for complete 1 work.

So, In one day they can do (1/10) work

They worked for 8 days together.

In 8 days the did $8 \times \frac{1}{10} = \frac{4}{5}$work.

So, remaining work $= (1 - \frac{4}{5} ) = \frac{1}{4}$

Now number of students are (20-12)

$= 8$

20 students take 10 days

1 students take 200 days

8 students take $\frac{200}{8} = 25$days

So, 8 students do 1 work in 25 days

So,they do (1/4) work in $\frac{25}{4} = 6 \frac{1}{4}$

days.