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 31% copper and 27% zinc and the remaining is nickel.Find the amound of nickle in 20 kg of the alloy. kg Answer:_______________ |
| 2) An alloy consists of 22% copper and 14% zinc and the remaining is nickel.Find the amound of nickle in 29 kg of the alloy. kg Answer:_______________ |
| 3) An alloy consists of 24% copper and 32% zinc and the remaining is nickel.Find the amound of nickle in 10 kg of the alloy. kg Answer:_______________ |
| 4) An alloy consists of 28% copper and 33% zinc and the remaining is nickel.Find the amound of nickle in 27 kg of the alloy. kg Answer:_______________ |
| 5) An alloy consists of 35% copper and 20% zinc and the remaining is nickel.Find the amound of nickle in 30 kg of the alloy. kg Answer:_______________ |
| 6) An alloy consists of 18% copper and 12% zinc and the remaining is nickel.Find the amound of nickle in 26 kg of the alloy. kg Answer:_______________ |
| 7) An alloy consists of 14% copper and 33% zinc and the remaining is nickel.Find the amound of nickle in 27 kg of the alloy. kg Answer:_______________ |
| 8) An alloy consists of 11% copper and 40% zinc and the remaining is nickel.Find the amound of nickle in 14 kg of the alloy. kg Answer:_______________ |
| 9) An alloy consists of 43% copper and 16% zinc and the remaining is nickel.Find the amound of nickle in 10 kg of the alloy. kg Answer:_______________ |
| 10) An alloy consists of 17% copper and 20% zinc and the remaining is nickel.Find the amound of nickle in 16 kg of the alloy. kg Answer:_______________ |
| 1) An alloy consists of 31% copper and 27% zinc and the remaining is nickel.Find the amound of nickle in 20 kg of the alloy. Answer: 8.4kg SOLUTION 1 : Given: Percentage of copper = 31% Percentage of zinc = 27% Percentage of nickle = 100-(31+27) = 100-58 =42% Amount of nickle is 20 kg of the alloy = 42% of 20kg = (42÷100) x 20 = 0.42 x 20 = 8.4 kg |
| 2) An alloy consists of 22% copper and 14% zinc and the remaining is nickel.Find the amound of nickle in 29 kg of the alloy. Answer: 18.56kg SOLUTION 1 : Given: Percentage of copper = 22% Percentage of zinc = 14% Percentage of nickle = 100-(22+14) = 100-36 =64% Amount of nickle is 29 kg of the alloy = 64% of 29kg = (64÷100) x 29 = 0.64 x 29 = 18.56 kg |
| 3) An alloy consists of 24% copper and 32% zinc and the remaining is nickel.Find the amound of nickle in 10 kg of the alloy. Answer: 4.4kg SOLUTION 1 : Given: Percentage of copper = 24% Percentage of zinc = 32% Percentage of nickle = 100-(24+32) = 100-56 =44% Amount of nickle is 10 kg of the alloy = 44% of 10kg = (44÷100) x 10 = 0.44 x 10 = 4.4 kg |
| 4) An alloy consists of 28% copper and 33% zinc and the remaining is nickel.Find the amound of nickle in 27 kg of the alloy. Answer: 10.53kg SOLUTION 1 : Given: Percentage of copper = 28% Percentage of zinc = 33% Percentage of nickle = 100-(28+33) = 100-61 =39% Amount of nickle is 27 kg of the alloy = 39% of 27kg = (39÷100) x 27 = 0.39 x 27 = 10.53 kg |
| 5) An alloy consists of 35% copper and 20% zinc and the remaining is nickel.Find the amound of nickle in 30 kg of the alloy. Answer: 13.5kg SOLUTION 1 : Given: Percentage of copper = 35% Percentage of zinc = 20% Percentage of nickle = 100-(35+20) = 100-55 =45% Amount of nickle is 30 kg of the alloy = 45% of 30kg = (45÷100) x 30 = 0.45 x 30 = 13.5 kg |
| 6) An alloy consists of 18% copper and 12% zinc and the remaining is nickel.Find the amound of nickle in 26 kg of the alloy. Answer: 18.2kg SOLUTION 1 : Given: Percentage of copper = 18% Percentage of zinc = 12% Percentage of nickle = 100-(18+12) = 100-30 =70% Amount of nickle is 26 kg of the alloy = 70% of 26kg = (70÷100) x 26 = 0.7 x 26 = 18.2 kg |
| 7) An alloy consists of 14% copper and 33% zinc and the remaining is nickel.Find the amound of nickle in 27 kg of the alloy. Answer: 14.31kg SOLUTION 1 : Given: Percentage of copper = 14% Percentage of zinc = 33% Percentage of nickle = 100-(14+33) = 100-47 =53% Amount of nickle is 27 kg of the alloy = 53% of 27kg = (53÷100) x 27 = 0.53 x 27 = 14.31 kg |
| 8) An alloy consists of 11% copper and 40% zinc and the remaining is nickel.Find the amound of nickle in 14 kg of the alloy. Answer: 6.86kg SOLUTION 1 : Given: Percentage of copper = 11% Percentage of zinc = 40% Percentage of nickle = 100-(11+40) = 100-51 =49% Amount of nickle is 14 kg of the alloy = 49% of 14kg = (49÷100) x 14 = 0.49 x 14 = 6.86 kg |
| 9) An alloy consists of 43% copper and 16% zinc and the remaining is nickel.Find the amound of nickle in 10 kg of the alloy. Answer: 4.1kg SOLUTION 1 : Given: Percentage of copper = 43% Percentage of zinc = 16% Percentage of nickle = 100-(43+16) = 100-59 =41% Amount of nickle is 10 kg of the alloy = 41% of 10kg = (41÷100) x 10 = 0.41 x 10 = 4.1 kg |
| 10) An alloy consists of 17% copper and 20% zinc and the remaining is nickel.Find the amound of nickle in 16 kg of the alloy. Answer: 10.08kg SOLUTION 1 : Given: Percentage of copper = 17% Percentage of zinc = 20% Percentage of nickle = 100-(17+20) = 100-37 =63% Amount of nickle is 16 kg of the alloy = 63% of 16kg = (63÷100) x 16 = 0.63 x 16 = 10.08 kg |