A and B are two alloys of gold and copper prepared by mixing metals in the ratios 5 : 3

A and B are two alloys of gold and copper prepared by mixing metals in the ratios 5 : 3 and 5 : 11 respectively. Equal quantities of these alloys are melted to form a third alloy C. The ratio of gold and copper in the alloy C is:

  1. 33:25
  2. 25:33
  3. 15:17
  4. None of these
Anurag Mishra Professor Asked on 27th February 2016 in Maths.
Add Comment
1 Answer(s)

Answer: (3) 15: 17

Solution:-
A contains Gold=5/8 Copper=3/8
B contains Gold=5/16 Copper=11/16
After mixing A & B , C will have Gold=5/8+5/16=15/16
Copper=3/8+11/16=17/16
Therefore ratio of Gold:Copper=15/16 : 17/16 =15:17

Hence, the correct answer is option (3) 15: 17.

Anurag Mishra Professor Answered on 28th February 2016.
Add Comment

Your Answer

By posting your answer, you agree to the privacy policy and terms of service.