Question

If 5 students utilize 18 pencils in 9 days, how long at the same rate will 66 pencils last for 15 students?

• A. 10 days
• B. 12 days
• C. 11 days
• D. None of these

Answer 1

Answer: (C)

11 days

Answer 2

Let the number of days be d.Students	Pencils	Days
5	18	9
15	66	d

Required days = 9×$\frac{5}{15}$×$\frac{66}{18}$ = 11 days
So the correct option is (C)