Question

a group of 3 friends staying together ,consume 54 kg of wheat every month some more friends join the group and they find the same amount of wheat lasts for 18 days .How many new members are there in this group now

Answer 1

Amount of wheat consumed per person per day = 54000/(3*30)
= 600 g
For 18 days, 600 * x= 54000. ( x is the total no. Of people)
x= 54000/600
x= 90 people.
But there were 3 people in the beginning
Therefore, new members= 90-3
=87

Answer 2

no. of friends=3     ,     x  
no. of days=   30   ,     18             inverse
x=3*30/18
x=90/18
x=5
2 members were added