If a : b : c = 1 : 2 : 3 and 3a + 2b + c = 30, find the value of c.
यदि a : b : c = 1 : 2 : 3 है और 3a + 2b + c = 30 है, तो c का मान ज्ञात कीजिए।
Answer और ExplanationAnswer and explanation
Answer: (B) 9
माना a = k, b = 2k, c = 3k।
3k + 2(2k) + 3k = 30 ⇒ 10k = 30 ⇒ k = 3
c = 3 × 3 = 9
✓
c का मान 9 है।
Let a = k, b = 2k, c = 3k.
3k + 2(2k) + 3k = 30 ⇒ 10k = 30 ⇒ k = 3
c = 3 × 3 = 9
✓
The value of c is 9.
Source: Selection Post Phase XIV (Graduate) · 22 Sep 2026 · Shift 1। Solution: Prashant Sir, Vijayastra।Source: Selection Post Phase XIV (Graduate) · 22 Sep 2026 · Shift 1. Solution by Prashant Sir, from Vijayastra.