railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Ratio and Proportion Compound Ratios

यदि a : (b + c) = 1 : 3 और c : (a + b) = 5 : 7 है, तो b : (c + a) का मान ज्ञात कीजिए।

1
1 : 2
2
3 : 4
3
4 : 5
4
3 : 5
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