Alloy A contains copper and zinc in the ratio of 4 : 3 and alloy B contains copper and zinc in the ratio 5 : 2. A and B are taken in the ratio of 5 : 6 and melted to form a new alloy. The percentage of zinc in the alloy is closet to ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 ie 35.
Cu Zn
A → 4 3 (5 parts)
B → 5 2 (6 parts)
Final mixture = Zn/T = 
= Zn/T = 22/77
= (22/77) × 100 = 35