Question

Gilda has a bag of marbles. She gives 20% of them to her friend Pedro. Then Gilda gives 10% of what is left to another friend Ebony. Finally, Gilda gives 25% of what is now left in the bag to her brother Jimmy. What percentage of her original bag of marbles does Gilda have left for herself?

a) 55%
b) 60%
c) 70%
d) 75%

Answer 1

Gilda has 75% of her original bag of marbles left for herself.

Step-by-step explanation:

To find the percentage of the original bag of marbles that Gilda has left for herself, we need to subtract the percentages given to her friends from 100%. Gilda starts with 100% of the marbles. She gives 20% to Pedro, so she has 80% left. Then she gives 10% of that to Ebony, so she has 90% of the remaining 80% left. Finally, she gives 25% of that to Jimmy, so she has 75% of the remaining 90% left for herself.

Therefore, Gilda has 75% of her original bag of marbles left for herself.