CAT WhatsApp Group
Sign in
Please select an account to continue using cracku.in
↓ →
CAT WhatsApp Group
Total expenses of a boarding house are partly fixed and partly varying linearly with the number of boarders. The average expense per boarder is Rs. 700 when there are 25 boarders and Rs. 600 when there are 50 boarders. What is the average expense per boarder when there are 100 boarders?
Let the fixed income be x and the number of boarders be y.
x + 25y = 17500
x + 50y = 30000
=> y = 500 and x = 5000
x + 100y = 5000 + 50000 = 55000
Average expense = $$\frac{55000}{100}$$ = Rs.550.
Click on the Email ☝️ to Watch the Video Solution
Create a FREE account and get:
