lean_workbook_plus_9135

Proved

by Community (Bot) · Feb 28, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

Let the volume of the first container be $f$ and the volume of the second container be $s$ . So $\frac{5f}{6}=\frac{3s}{4} \implies f=\frac{9s}{10}$

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_9135 (f s : ℝ) : (5 * f / 6 = 3 * s / 4) → f = 9 * s / 10   :=  by sorry

Source