Question

A desert has both fruit and yoghurt inside

Answer 1

$2\ (the\ mass\ of\ the\ fruit)\ :\ 5\ (the\ mass\ of\ the\ yoghurt)\\\\\ \ \ \Rightarrow\ \ \ \frac{5}{7} \ of\ the\ all\ mass\ is\ the\ mass\ of\ the\ yoghurt\\\\ \frac{5}{7} \cdot 175\ g\ =5\cdot 25\ g=125\ g\\\\Ans.\ 175\ divide\ 7\ times\ 5.\ \ The\ mass\ of\ the\ yoghurt\ is\ 125\ g.$