Question

Arun and Ashwini complete a task by themselves in 20 and 25 days respectively.can you tell the percentage by which Arun works more effectively than Ashwini?​

Answer 1

Arun can do certain work in 20 days

Efficiency =

20

100

=5%

Ashwin can do certain work in 25 days

Efficiency =

2.5

100

=4%

Answer 2

Answer:

25% is answer

Step-by-step explanation:

Arun takes 20 days to complete 1 work.

$∴ \: \: he \: complete \: \frac{1}{20} \: work \: in \: 1 \: day.$

Ashwani take 25 days to complete 1 work.

$∴ \: \: he \: completes \: \frac{1}{25} \: work \: in \: 1 \: dy.$

Hence, the difference between their capacities

$⟹ \frac{1}{20} - \frac{1}{25}$

$⟹ \frac{5 - 4}{100}$

$⟹ \frac{1}{100}$

Hence, the capacity of Arun, is 1 / 100 more than Ashwani.

Hence, the percentage of muchness

$⟹ \frac{ \frac{1}{100} \times 100}{ \frac{1}{25} }$

$⟹ \frac{1 \times 100 \times 25}{100 \times 1}$

$⟹25\%$

Thus, capacity of Arun is 25% more then Ashwani.