Question

4 people do a job in 4 days. how long will 12 people do that work?​

Answer 1

Answer:

here solution is based on variation.

as more number of people means less number of days it takes to complete the work,

they are inversely proportional.

x1y1 = x2y2 = k

therefore 4×4 = 12×x

x = 4×4/12

=> 16/12

=> 4/3

=> 1.3 days

Answer 2

Answer:

$\bold\red{\boxed{ONE \: PEOPLE \: DO \: JOB \: IN}}$

$\implies 4÷4 = 1$

$\bold\red{\boxed{12\:PEOPLE\:DO\:THE\:SMAE\:WORK\:AT}}$

$\implies 1×12=12\:days$

HOPE IT HELPS YOU