Question:
A number \( n \) is 20% less than another number \( m \). If \( m = 50 \), what is \( n \)?
A number \( n \) is 20% less than another number \( m \). If \( m = 50 \), what is \( n \)?
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To find a number that is a certain percentage less than another number, subtract the percentage of the second number from it.
Updated On: Oct 6, 2025
- \( 35 \)
- \( 40 \)
- \( 42 \)
- \( 45 \)
- \( 48 \)
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The Correct Option is B
Solution and Explanation
Step 1: The number \( n \) is 20% less than \( m \), so we can write:
\[
n = m - 0.2m.
\]
Step 2: Substitute \( m = 50 \) into the equation:
\[
n = 50 - 0.2 \times 50 = 50 - 10 = 40.
\]
Thus, \( n = 40 \).
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