Question

If four persons can finish an assignment in 15 days how many persons will be required to finish the same assignment in 20 days?​

Answer 1

16 persons will be required to finish the same assignment in 20 days.

Answer 2

Answer:

3 people

Step-by-step explanation:

4 people - 15 days

? - 20 days

If the number of people increases, proportionally the number of days decreases.

So it is an inverse proportion question so the formula says:

x1y1 = x2y2

4 × 15 = x × 20

4 × 15 ÷ 20 = 3 people

Therefore it will take 3 people to complete the assignment in 20 days.