To find out what fraction of the total cost Ángeles will pay, we can break down the situation:
1. Paty has only half of the money she is supposed to contribute.
2. Maribel and Ángeles decide to help Paty by each contributing the same amount to cover the shortfall.
3. Since Paty has half of her share, the total amount needed to cover the remaining half is divided equally between Maribel and Ángeles.
Therefore, Ángeles will contribute 1/4 (one-fourth) of the total cost. This is because if Paty has half (1/2) and Maribel contributes the other half to cover for Paty, then the remaining half is split equally between Maribel and Ángeles, making Ángeles responsible for 1/4 (1/2 ÷ 2 = 1/4) of the total cost.
