Free Practice Question
PS · Problem Solving
555-605
Algebra
In a certain school, the ratio of boys to girls is 3:4. If there are 120 boys in the school, how many girls are there?
Answer Choices
Correct answer marked belowA
80
B
90
C
120
160
Correct
E
120
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Explanation
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Official Explanation
Official
To find the number of girls in the school, we start with the ratio of boys to girls, which is 3:4. This means for every 3 boys, there are 4 girls. If there are 120 boys, we can set up a proportion to find the number of girls. Let the…
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Comments
4
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D
DonFeb 2, 2025
Thank for sharing!
P
PranavFeb 3, 2025
good question
J
JimApr 5, 2025
good question
S
SiddhiFeb 14, 2025
thanks
What this question tests
What it tests
Your ability to manipulate linear and quadratic expressions, substitute unknowns, and solve equations under time pressure.
Common trap
Losing a sign when moving terms across the equals sign, or dividing both sides by a variable that could equal zero.
Details
Difficulty
555-605
Type
PS
Category