Q1:
PYP 2025
Arithmetic > Mixture & Alligation
Medium
The proportions of gold in three alloys are 40%, 50% and 80% respectively. These alloys are mixed in certain proportions to obtain 30 kg of a new alloy, which has 55% gold. If the amount of the first alloy is 9 kg, what is the amount in kg of the third alloy used?
Correct Answer
Option 4
Correct Answer