Answer:
25 cashiers
Explanation:
To solve this, you can multiply the number of cashiers at 10:00 am (20) by 1 1/4, which is the same as multiplying by 5/4.
20 x 5/4 = 25
So, there are 25 cashiers at 4:00 pm.
You can confirm this by dividing 25 by 5/4 to see if it equals 20:
25 * 4/5 = 20
Therefore, there are 25 cashiers at 4:00 pm.