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 12% copper and 37% zinc and the remaining is nickel.Find the amound of nickle in 29 kg of the alloy. kg Answer:_______________ |
| 2) An alloy consists of 16% copper and 32% zinc and the remaining is nickel.Find the amound of nickle in 20 kg of the alloy. kg Answer:_______________ |
| 3) An alloy consists of 20% copper and 12% zinc and the remaining is nickel.Find the amound of nickle in 22 kg of the alloy. kg Answer:_______________ |
| 4) An alloy consists of 33% copper and 32% zinc and the remaining is nickel.Find the amound of nickle in 23 kg of the alloy. kg Answer:_______________ |
| 5) An alloy consists of 10% copper and 20% zinc and the remaining is nickel.Find the amound of nickle in 16 kg of the alloy. kg Answer:_______________ |
| 6) An alloy consists of 43% copper and 30% zinc and the remaining is nickel.Find the amound of nickle in 18 kg of the alloy. kg Answer:_______________ |
| 7) An alloy consists of 39% copper and 25% zinc and the remaining is nickel.Find the amound of nickle in 14 kg of the alloy. kg Answer:_______________ |
| 8) 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:_______________ |
| 9) An alloy consists of 46% copper and 33% zinc and the remaining is nickel.Find the amound of nickle in 14 kg of the alloy. kg Answer:_______________ |
| 10) An alloy consists of 26% copper and 13% zinc and the remaining is nickel.Find the amound of nickle in 30 kg of the alloy. kg Answer:_______________ |
| 1) An alloy consists of 12% copper and 37% 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 = 12% Percentage of zinc = 37% Percentage of nickle = 100-(12+37) = 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 |
| 2) An alloy consists of 16% copper and 32% zinc and the remaining is nickel.Find the amound of nickle in 20 kg of the alloy. Answer: 10.4kg SOLUTION 1 : Given: Percentage of copper = 16% Percentage of zinc = 32% Percentage of nickle = 100-(16+32) = 100-48 =52% Amount of nickle is 20 kg of the alloy = 52% of 20kg = (52÷100) x 20 = 0.52 x 20 = 10.4 kg |
| 3) An alloy consists of 20% copper and 12% zinc and the remaining is nickel.Find the amound of nickle in 22 kg of the alloy. Answer: 14.96kg SOLUTION 1 : Given: Percentage of copper = 20% Percentage of zinc = 12% Percentage of nickle = 100-(20+12) = 100-32 =68% Amount of nickle is 22 kg of the alloy = 68% of 22kg = (68÷100) x 22 = 0.68 x 22 = 14.96 kg |
| 4) An alloy consists of 33% copper and 32% zinc and the remaining is nickel.Find the amound of nickle in 23 kg of the alloy. Answer: 8.05kg SOLUTION 1 : Given: Percentage of copper = 33% Percentage of zinc = 32% Percentage of nickle = 100-(33+32) = 100-65 =35% Amount of nickle is 23 kg of the alloy = 35% of 23kg = (35÷100) x 23 = 0.35 x 23 = 8.05 kg |
| 5) An alloy consists of 10% copper and 20% zinc and the remaining is nickel.Find the amound of nickle in 16 kg of the alloy. Answer: 11.2kg SOLUTION 1 : Given: Percentage of copper = 10% Percentage of zinc = 20% Percentage of nickle = 100-(10+20) = 100-30 =70% Amount of nickle is 16 kg of the alloy = 70% of 16kg = (70÷100) x 16 = 0.7 x 16 = 11.2 kg |
| 6) An alloy consists of 43% copper and 30% zinc and the remaining is nickel.Find the amound of nickle in 18 kg of the alloy. Answer: 4.86kg SOLUTION 1 : Given: Percentage of copper = 43% Percentage of zinc = 30% Percentage of nickle = 100-(43+30) = 100-73 =27% Amount of nickle is 18 kg of the alloy = 27% of 18kg = (27÷100) x 18 = 0.27 x 18 = 4.86 kg |
| 7) An alloy consists of 39% copper and 25% zinc and the remaining is nickel.Find the amound of nickle in 14 kg of the alloy. Answer: 5.04kg SOLUTION 1 : Given: Percentage of copper = 39% Percentage of zinc = 25% Percentage of nickle = 100-(39+25) = 100-64 =36% Amount of nickle is 14 kg of the alloy = 36% of 14kg = (36÷100) x 14 = 0.36 x 14 = 5.04 kg |
| 8) 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 |
| 9) An alloy consists of 46% copper and 33% zinc and the remaining is nickel.Find the amound of nickle in 14 kg of the alloy. Answer: 2.94kg SOLUTION 1 : Given: Percentage of copper = 46% Percentage of zinc = 33% Percentage of nickle = 100-(46+33) = 100-79 =21% Amount of nickle is 14 kg of the alloy = 21% of 14kg = (21÷100) x 14 = 0.21 x 14 = 2.94 kg |
| 10) An alloy consists of 26% copper and 13% zinc and the remaining is nickel.Find the amound of nickle in 30 kg of the alloy. Answer: 18.3kg SOLUTION 1 : Given: Percentage of copper = 26% Percentage of zinc = 13% Percentage of nickle = 100-(26+13) = 100-39 =61% Amount of nickle is 30 kg of the alloy = 61% of 30kg = (61÷100) x 30 = 0.61 x 30 = 18.3 kg |