Written Instructions:
For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..
For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.
Leave your answers in the simplest form or correct to two decimal places.
| 1) An alloy consists of 45% copper and 39% zinc and the remaining is nickel.Find the amound of nickle in 15 kg of the alloy. kg Answer:_______________ |
| 2) An alloy consists of 40% copper and 13% zinc and the remaining is nickel.Find the amound of nickle in 24 kg of the alloy. kg Answer:_______________ |
| 3) An alloy consists of 20% copper and 38% zinc and the remaining is nickel.Find the amound of nickle in 17 kg of the alloy. kg Answer:_______________ |
| 4) An alloy consists of 33% copper and 37% zinc and the remaining is nickel.Find the amound of nickle in 20 kg of the alloy. kg Answer:_______________ |
| 5) An alloy consists of 11% copper and 25% zinc and the remaining is nickel.Find the amound of nickle in 19 kg of the alloy. kg Answer:_______________ |
| 6) An alloy consists of 22% copper and 15% zinc and the remaining is nickel.Find the amound of nickle in 10 kg of the alloy. kg Answer:_______________ |
| 7) An alloy consists of 49% copper and 38% zinc and the remaining is nickel.Find the amound of nickle in 24 kg of the alloy. kg Answer:_______________ |
| 8) An alloy consists of 22% copper and 19% zinc and the remaining is nickel.Find the amound of nickle in 18 kg of the alloy. kg Answer:_______________ |
| 9) An alloy consists of 30% copper and 19% zinc and the remaining is nickel.Find the amound of nickle in 14 kg of the alloy. kg Answer:_______________ |
| 10) An alloy consists of 29% copper and 39% zinc and the remaining is nickel.Find the amound of nickle in 18 kg of the alloy. kg Answer:_______________ |
| 1) An alloy consists of 45% copper and 39% zinc and the remaining is nickel.Find the amound of nickle in 15 kg of the alloy. Answer: 2.4kg SOLUTION 1 : Given: Percentage of copper = 45% Percentage of zinc = 39% Percentage of nickle = 100-(45+39) = 100-84 =16% Amount of nickle is 15 kg of the alloy = 16% of 15kg = (16÷100) x 15 = 0.16 x 15 = 2.4 kg |
| 2) An alloy consists of 40% copper and 13% zinc and the remaining is nickel.Find the amound of nickle in 24 kg of the alloy. Answer: 11.28kg SOLUTION 1 : Given: Percentage of copper = 40% Percentage of zinc = 13% Percentage of nickle = 100-(40+13) = 100-53 =47% Amount of nickle is 24 kg of the alloy = 47% of 24kg = (47÷100) x 24 = 0.47 x 24 = 11.28 kg |
| 3) An alloy consists of 20% copper and 38% zinc and the remaining is nickel.Find the amound of nickle in 17 kg of the alloy. Answer: 7.14kg SOLUTION 1 : Given: Percentage of copper = 20% Percentage of zinc = 38% Percentage of nickle = 100-(20+38) = 100-58 =42% Amount of nickle is 17 kg of the alloy = 42% of 17kg = (42÷100) x 17 = 0.42 x 17 = 7.14 kg |
| 4) An alloy consists of 33% copper and 37% zinc and the remaining is nickel.Find the amound of nickle in 20 kg of the alloy. Answer: 6kg SOLUTION 1 : Given: Percentage of copper = 33% Percentage of zinc = 37% Percentage of nickle = 100-(33+37) = 100-70 =30% Amount of nickle is 20 kg of the alloy = 30% of 20kg = (30÷100) x 20 = 0.3 x 20 = 6 kg |
| 5) An alloy consists of 11% copper and 25% zinc and the remaining is nickel.Find the amound of nickle in 19 kg of the alloy. Answer: 12.16kg SOLUTION 1 : Given: Percentage of copper = 11% Percentage of zinc = 25% Percentage of nickle = 100-(11+25) = 100-36 =64% Amount of nickle is 19 kg of the alloy = 64% of 19kg = (64÷100) x 19 = 0.64 x 19 = 12.16 kg |
| 6) An alloy consists of 22% copper and 15% zinc and the remaining is nickel.Find the amound of nickle in 10 kg of the alloy. Answer: 6.3kg SOLUTION 1 : Given: Percentage of copper = 22% Percentage of zinc = 15% Percentage of nickle = 100-(22+15) = 100-37 =63% Amount of nickle is 10 kg of the alloy = 63% of 10kg = (63÷100) x 10 = 0.63 x 10 = 6.3 kg |
| 7) An alloy consists of 49% copper and 38% zinc and the remaining is nickel.Find the amound of nickle in 24 kg of the alloy. Answer: 3.12kg SOLUTION 1 : Given: Percentage of copper = 49% Percentage of zinc = 38% Percentage of nickle = 100-(49+38) = 100-87 =13% Amount of nickle is 24 kg of the alloy = 13% of 24kg = (13÷100) x 24 = 0.13 x 24 = 3.12 kg |
| 8) An alloy consists of 22% copper and 19% zinc and the remaining is nickel.Find the amound of nickle in 18 kg of the alloy. Answer: 10.62kg SOLUTION 1 : Given: Percentage of copper = 22% Percentage of zinc = 19% Percentage of nickle = 100-(22+19) = 100-41 =59% Amount of nickle is 18 kg of the alloy = 59% of 18kg = (59÷100) x 18 = 0.59 x 18 = 10.62 kg |
| 9) An alloy consists of 30% copper and 19% zinc and the remaining is nickel.Find the amound of nickle in 14 kg of the alloy. Answer: 7.14kg SOLUTION 1 : Given: Percentage of copper = 30% Percentage of zinc = 19% Percentage of nickle = 100-(30+19) = 100-49 =51% Amount of nickle is 14 kg of the alloy = 51% of 14kg = (51÷100) x 14 = 0.51 x 14 = 7.14 kg |
| 10) An alloy consists of 29% copper and 39% zinc and the remaining is nickel.Find the amound of nickle in 18 kg of the alloy. Answer: 5.76kg SOLUTION 1 : Given: Percentage of copper = 29% Percentage of zinc = 39% Percentage of nickle = 100-(29+39) = 100-68 =32% Amount of nickle is 18 kg of the alloy = 32% of 18kg = (32÷100) x 18 = 0.32 x 18 = 5.76 kg |