Question

In a training camp there were provisions for550 mens for 72 days but 150 trainees are not attending the camp how long will the provisions last.

Answer 1

550*72 = (550-150)*x

550*72 = 400*x

X = 550*72/400

X = 99

Therefore ans : 99 days

Answer 2

the no. of men and provision available to them vary in inverse proportion.

no. of trainees attending the camp = 550-150=400

so, men days provision will last

550 72

400. ?

therefore, 550×72= 400×?

=? =550×72/400

=? =99

provision will last for 99 days.