Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Quantitative Aptitude Percentage

यदि (a + b) का 20% = ab का 50% और (a - b) का 40% = ab का 70%, तो b, a का कितना भाग है?

1
\(\frac{3}{{17}}\)
2
\(\frac{-3}{{17}}\)
3
\(\frac{4}{{17}}\)
4
\(\frac{17}{{3}}\)
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