engineering recuitment FSSAI Assistant Mock Test 2021 Quantitative Aptitude Ratio and Proportion Compound Ratios
यदि \(\frac{{a{x^2}\; + \;b{y^2}}}{{a{x^2}\; - \;b{y^2}}} = \frac{{77}}{{13}}\;और \frac{{x{y^2}\; + \;a{b^2}}}{{x{y^2}\; - \;a{b^2}}} = \frac{{17}}{7}\) है, तब x2 : b2 का मान क्या है?
1
1 : 4
2
9 : 4
3
2 : 3
4
49 : 64