SSC CHSL 2025 · PYQ · Mixture and Alligation · medium
A mixture containing 18% of methanol is mixed with another mixture containing b% of methanol in the ratio 4:5. If the percentage of methanol in the final mixture is 16%, what is the percentage of b?
A.12.26%
B.17.2%
C.16.32%
D.14.4%✓ Correct
Explanation
Using alligation: (4 × 18 + 5 × b) / 9 = 16. So 72 + 5b = 144, 5b = 72, b = 14.4%.
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