Question

12 Persona can finish work in 15 days in how many days in how many days will the same work be complete with 20 person ​

Answer 1

Answer:

9 Days

Step-by-step explanation:

This question is based on Indirect Proportion

xy = k

Where x and y are variables but k is constant

12 persons can finish the work in 15 days. Here :

x = 12

y = 15

k = xy

k = 12 × 15

k = 180

'in how many days will the same work be complete with 20 person ?' Here :

x = 20

(k is always constant so)

k = 180

y = ?

Let y = a days. Then the equation will be :

xy = k

20 × a = 180

a = 180/20 = 9

a = 9 days

Hence, 20 persons will finish the work in 9 days

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