Question

ThenRs(400x n)+Rs
4n(n + 1)/3= Rs16,176


Pls do it step by step and how to u slove the “n” part

Answer 1

Step-by-step explanation:

$\frac{4n(n + 1)}{3} = 16176 \\ \frac{4n^{2} + 4n}{3} = 16176 \\ 16176 \times 3 = {4n}^{2} + 4n \\ 48528 = {4n}^{2} + 4n \\ \sqrt{48528 } = {2n} + \sqrt{4n} \\ \frac{ \sqrt{48528} }{2} = n + \sqrt{4n} \\ \frac{ \sqrt{48528 } }{2} - \sqrt{4n} = n$

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