Question

решить задачу по картине

Answer 1

$x+y=63\\\\0,4x=0,3y\\\\\frac{x}{y}=\frac{0,3}{0,4}=\frac{3}{4}\\\\\frac{x}{y}=\frac{3k}{4k}\\\\3k+4k=63\\\\7k=63\\\\k=9\\\\x=3k=9\cdot 3=27 (m)\\\\y=4k=9\cdot 4=36(m)$