Teaching PSTET Paper 1 & 2 Mock Test 2024 Quantitative Aptitude Ratio and Proportion Simple Ratios

a : b = 5 : 7, b : c = 21 : 6 का अनुपात दिया गया है, तो (3a + c) : (2b – c) का मान ज्ञात कीजिए। 

1
15 : 17
2
12 : 17
3
17 : 12
4
5 : 3
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