Answer:
Number of quarters with Pablo = 4
Number of quarters with Laqueta = 12
Step-by-step explanation:
Given that:
Laqueta has three times as many quarters as Pablo.
They both spend $0.50.
After that Laqueta will have 5 times as many quarters as Pablo.
To find:
Number of quarters with Laqueta and Pablo now?
Solution:
Let number of quarters with Laqueta = 
Let number of quarters with Pablo = 
As per given statement:

In $0.50, there are 2 quarters:
After spending $0.50, number of quarters left with both of them:
Number of quarters left with Laqueta =
- 2 = 
Money left with Pablo =
- 2
As per given statement:

Therefore, the answer is:
Number of quarters with Pablo = 4
Number of quarters with Laqueta =
= 12