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 30% copper and 32% zinc and the remaining is nickel.Find the amound of nickle in 20 kg of the alloy. kg Answer:_______________ |
| 2) An alloy consists of 24% copper and 25% zinc and the remaining is nickel.Find the amound of nickle in 29 kg of the alloy. kg Answer:_______________ |
| 3) An alloy consists of 25% copper and 37% zinc and the remaining is nickel.Find the amound of nickle in 19 kg of the alloy. kg Answer:_______________ |
| 4) An alloy consists of 46% copper and 22% zinc and the remaining is nickel.Find the amound of nickle in 16 kg of the alloy. kg Answer:_______________ |
| 5) An alloy consists of 12% copper and 29% zinc and the remaining is nickel.Find the amound of nickle in 22 kg of the alloy. kg Answer:_______________ |
| 6) An alloy consists of 45% copper and 14% zinc and the remaining is nickel.Find the amound of nickle in 27 kg of the alloy. kg Answer:_______________ |
| 7) An alloy consists of 19% copper and 14% zinc and the remaining is nickel.Find the amound of nickle in 12 kg of the alloy. kg Answer:_______________ |
| 8) An alloy consists of 15% copper and 35% zinc and the remaining is nickel.Find the amound of nickle in 10 kg of the alloy. kg Answer:_______________ |
| 9) An alloy consists of 22% copper and 22% zinc and the remaining is nickel.Find the amound of nickle in 22 kg of the alloy. kg Answer:_______________ |
| 10) An alloy consists of 15% copper and 15% zinc and the remaining is nickel.Find the amound of nickle in 12 kg of the alloy. kg Answer:_______________ |
| 1) An alloy consists of 30% copper and 32% zinc and the remaining is nickel.Find the amound of nickle in 20 kg of the alloy. Answer: 7.6kg SOLUTION 1 : Given: Percentage of copper = 30% Percentage of zinc = 32% Percentage of nickle = 100-(30+32) = 100-62 =38% Amount of nickle is 20 kg of the alloy = 38% of 20kg = (38÷100) x 20 = 0.38 x 20 = 7.6 kg |
| 2) An alloy consists of 24% copper and 25% zinc and the remaining is nickel.Find the amound of nickle in 29 kg of the alloy. Answer: 14.79kg SOLUTION 1 : Given: Percentage of copper = 24% Percentage of zinc = 25% Percentage of nickle = 100-(24+25) = 100-49 =51% Amount of nickle is 29 kg of the alloy = 51% of 29kg = (51÷100) x 29 = 0.51 x 29 = 14.79 kg |
| 3) An alloy consists of 25% copper and 37% zinc and the remaining is nickel.Find the amound of nickle in 19 kg of the alloy. Answer: 7.22kg SOLUTION 1 : Given: Percentage of copper = 25% Percentage of zinc = 37% Percentage of nickle = 100-(25+37) = 100-62 =38% Amount of nickle is 19 kg of the alloy = 38% of 19kg = (38÷100) x 19 = 0.38 x 19 = 7.22 kg |
| 4) An alloy consists of 46% copper and 22% zinc and the remaining is nickel.Find the amound of nickle in 16 kg of the alloy. Answer: 5.12kg SOLUTION 1 : Given: Percentage of copper = 46% Percentage of zinc = 22% Percentage of nickle = 100-(46+22) = 100-68 =32% Amount of nickle is 16 kg of the alloy = 32% of 16kg = (32÷100) x 16 = 0.32 x 16 = 5.12 kg |
| 5) An alloy consists of 12% copper and 29% zinc and the remaining is nickel.Find the amound of nickle in 22 kg of the alloy. Answer: 12.98kg SOLUTION 1 : Given: Percentage of copper = 12% Percentage of zinc = 29% Percentage of nickle = 100-(12+29) = 100-41 =59% Amount of nickle is 22 kg of the alloy = 59% of 22kg = (59÷100) x 22 = 0.59 x 22 = 12.98 kg |
| 6) An alloy consists of 45% copper and 14% zinc and the remaining is nickel.Find the amound of nickle in 27 kg of the alloy. Answer: 11.07kg SOLUTION 1 : Given: Percentage of copper = 45% Percentage of zinc = 14% Percentage of nickle = 100-(45+14) = 100-59 =41% Amount of nickle is 27 kg of the alloy = 41% of 27kg = (41÷100) x 27 = 0.41 x 27 = 11.07 kg |
| 7) An alloy consists of 19% copper and 14% zinc and the remaining is nickel.Find the amound of nickle in 12 kg of the alloy. Answer: 8.04kg SOLUTION 1 : Given: Percentage of copper = 19% Percentage of zinc = 14% Percentage of nickle = 100-(19+14) = 100-33 =67% Amount of nickle is 12 kg of the alloy = 67% of 12kg = (67÷100) x 12 = 0.67 x 12 = 8.04 kg |
| 8) An alloy consists of 15% copper and 35% zinc and the remaining is nickel.Find the amound of nickle in 10 kg of the alloy. Answer: 5kg SOLUTION 1 : Given: Percentage of copper = 15% Percentage of zinc = 35% Percentage of nickle = 100-(15+35) = 100-50 =50% Amount of nickle is 10 kg of the alloy = 50% of 10kg = (50÷100) x 10 = 0.5 x 10 = 5 kg |
| 9) An alloy consists of 22% copper and 22% zinc and the remaining is nickel.Find the amound of nickle in 22 kg of the alloy. Answer: 12.32kg SOLUTION 1 : Given: Percentage of copper = 22% Percentage of zinc = 22% Percentage of nickle = 100-(22+22) = 100-44 =56% Amount of nickle is 22 kg of the alloy = 56% of 22kg = (56÷100) x 22 = 0.56 x 22 = 12.32 kg |
| 10) An alloy consists of 15% copper and 15% zinc and the remaining is nickel.Find the amound of nickle in 12 kg of the alloy. Answer: 8.4kg SOLUTION 1 : Given: Percentage of copper = 15% Percentage of zinc = 15% Percentage of nickle = 100-(15+15) = 100-30 =70% Amount of nickle is 12 kg of the alloy = 70% of 12kg = (70÷100) x 12 = 0.7 x 12 = 8.4 kg |