Question

If 30 men can do job in 80 days how many more men would be required to do it
in 50 days?​

Answer 1

Answer:

if 30 men took 80 days to complete the job

so,

x1 =30, x2=80

x1y1 = x2y2

x2= 50

30 x 80 = 50 x X

30 x 80/50 = X

X = 42 mens

Answer 2

number of men be x=30

working day y=80

x proportional 1/y

therefore, x=k/y ( k is a non zero variation constant)

k= x. y

=30.80

=2400

then, x =2400/y

=2400/50

=48 men

more men require 48-30

=18 men