Q:

In an alloy, zinc and copper are in the ratio 1 : 2. In the second alloy the same elements are in the ratio 2 : 3. In what ratio should these two alloys be mixed to form a new alloy in which the two elements are in ratio 5 : 8?

• 1
  7 : 11
• 2
  3:10
• 3
  5 : 11
• 4
  9:11
• 5
  None of these