Aya had a jar of red pins and blue pins. Of these, $$\(40 \%\)$$ were blue. After Aya added green pins, only $$\(20 \%\)$$ of the pins were blue. What percent of all the pins were green?
A.
\(20 \%\)
B.
\(30 \%\)
C.
\(40 \%\)
D.
\(50 \%\)
Exam No：2022 First Round Grade 5 Year：2022 Question No：14
Answer:
D
Knowledge points:
G5 - Arithmetic - Percentages (Concept & Calculation)
Solution:
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