Question

The people who work for a coffee shop use the same number of notepads each week. The chart below shows how many notepads need to be ordered for different numbers of workers.

Notepads
Number of Workers 1 2 3 4 5 6
Number of Notepads 3 6 9 ? 15 18

How many notepads will be needed for 4 people?
A.
13
B.
14
C.
11
D.
12

Answer 1

To determine the number of notepads needed for 4 workers, we need to identify the pattern from the given data.

From the chart:

- 1 worker needs 3 notepads.
- 2 workers need 6 notepads.
- 3 workers need 9 notepads.
- 5 workers need 15 notepads.
- 6 workers need 18 notepads.

We can see that the number of notepads needed increases by 3 for each additional worker:

- For 1 worker: 3 notepads
- For 2 workers: 6 notepads (3 × 2)
- For 3 workers: 9 notepads (3 × 3)
- For 4 workers: ? (3 × 4)
- For 5 workers: 15 notepads (3 × 5)
- For 6 workers: 18 notepads (3 × 6)

For 4 workers, we can calculate:

3 notepads × 4 workers = 12 notepads

Therefore, the number of notepads needed for 4 workers is 12.

So the answer is:

D. 12