Question

How many window coverings are necessary to span 50 windows if each window covering is 15 windows long?

Answer 1

The correct answer to this question is option A- 4.

According to the question,  

No. Of windows= 50

Each window covering covers  15 windows.

= 50/15=  

= 3.33.

The number more than 3.33 is 4.  

Hence, 4 window coverings are necessary to span 5 windows if each window covering is 15 windows long.

Answer 2

one window covering = 15 windows (Given)

Find the number of coverings needed for 1 windows:

1 covering = 15 windows

15 windows = 1 covering

1 window = 1/15 covering

Find the number of coverings needed for 50 windows:

1 window = 1/15 covering

50 windows = 1/15 x 50 = 3.33 coverings ≈ 4 complete coverings

Answer: 4 windows covering