Question : An alloy contains copper, zinc, and nickel in the ratio of 3 : 2 : 5 respectively. What quantity of nickel (in kg) must be added to 100 kg of this alloy to have the new ratio of copper, zinc, and nickel 3 : 2 : 6 respectively?

Option 1: 20 kg

Option 2: 10 kg

Option 3: 8 kg

Option 4: 15 kg

Question : Alloy X contains 70% copper and 30% zinc. Alloy Y contains 40% copper, 25% zine and 35% aluminium Alloy X and Y are mixed in the ratio of 1 : 3. What is the ratio of copper and zine in the newly formed alloy?

Option 1: 19 : 33

Option 2: 11 : 32

Option 3: 38 : 21

Option 4: 19 : 21

Question : After selling 4% of a quantity of sugar, 6 kg of sugar remains. Find the total quantity of sugar.

Option 1: 7 kg

Option 2: 6.25 kg

Option 3: 11.11 kg

Option 4: 5.25 kg

Question : 135 kg of alloy A is mixed with 72 kg of alloy B to get a new alloy. If alloy A has zinc and copper in the ratio 4 : 5 and alloy B has zinc and copper in the ratio 7 : 5, then what is the weight of zinc in the new alloy?

Option 1: 102 kg

Option 2: 115 kg

Option 3: 85 kg

Option 4: 92 kg

Question : An alloy contains a mixture of two metals X and Y in the ratio of 2 : 3. The second alloy contains a mixture of the same metals, X and Y, in the ratio 7 : 3. In what ratio should the first and the second alloys be mixed to make a new alloy containing 50% of metal X?

Option 1: 3 : 4

Option 2: 3 : 1

Option 3: 5 : 6

Option 4: 2 : 1