Question
Download Solution PDFGold is 12 times as heavy as aluminum and copper is 5 times as heavy as aluminum.In what ratio gold and copper should be mixed to get an alloy 8 times of aluminum.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Gold is 12 times as heavy as aluminum and copper is 5 times as heavy as aluminum.
Calculation:
Let the ratio of gold and copper that taken be x : y
According to the question,
⇒ \(\frac{{12x + 5y}}{{x + y}} = \frac{8}{1}\)
⇒ 12x + 5y = 8x + 8y
⇒ 4x = 3y
⇒ x/y = 3/4
∴ Gold and copper are taken in the ratio 3 : 4. Alternate Method
Allegation method use in this question,
∴ Gold and copper are taken in the ratio 3 : 4.
Last updated on Jun 17, 2025
-> The Staff Selection Commission has released the SSC GD 2025 Result on 17th June 2025 on the official website. Candidates can check if their qualifying status by going through the List.
-> The SSC GD Notification 2026 will be released in October 2025 and the exam will be scheduled in the month of January and February 2026.
-> The SSC GD Merit List is expected to be released soon by the end of April 2025.
-> Previously SSC GD Vacancy was increased for Constable(GD) in CAPFs, SSF, Rifleman (GD) in Assam Rifles and Sepoy in NCB Examination, 2025.
-> Now the total number of vacancy is 53,690. Previously, SSC GD 2025 Notification was released for 39481 Vacancies.
-> The SSC GD Constable written exam was held on 4th, 5th, 6th, 7th, 10th, 11th, 12th, 13th, 17th, 18th, 19th, 20th, 21st and 25th February 2025.
-> The selection process includes CBT, PET/PST, Medical Examination, and Document Verification.
-> The candidates who will be appearing for the 2026 cycle in the exam must attempt the SSC GD Constable Previous Year Papers. Also, attempt SSC GD Constable Mock Tests.