Last week I mixed up 400 ml of lemonade that was $$\(30 \%\)$$ sugar and 200 ml of lemonade that was $$\(40 \%\)$$ sugar, and poured all of it into a glass. During the week 100 ml of pure water evaporated from the lemonade. The remaining lemonade is what percent sugar?

A.
\(30 \%\)
B.
\(33 \%\)
C.
\(35 \%\)
D.
\(40 \%\)
Mathematics
Competition
Math League
Exam No:2021 First Round Grade 7 Year:2021 Question No:32

Answer:

D

Knowledge points:

G7 - Algebra - Rate Problems (Distance-Rate-Time)

Solution:

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