Question

it takes 8 days 12 men to construct a wall How many man should be put on the job if it is required to be construted in 6 day

Answer 1

as far as men required to complete the construction of wall are 12 for 8days.

for 4 days you will require 6 men

for 2 days you will require 3 men

for 6 days you will require 9 men.
days are directly proportional to men
therefore, 8 is directly proportional to 12.
if we divide 8 by 4 then 12 will be also divided by 4
therefore, 2 is directly proportional to 3
if we multiply 2 by 3, then 3 will be also multiplied by 3 therefore, 6 days we will require 9 men.

Answer 2

Answer: 16 men

Step-by-step explanation:

Number of men and days are 'inversely related'

8 days === 12 men

1 day=== 12* 8 men

6 days=== 12 * 8/6 = 16 men

ALTERNATE:

M1 * D1 = M2 * D2     [for same work]

8 * 12 = M2 * 6

M2 = 8*12/6 = 16 men