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 40% copper and 31% zinc and the remaining is nickel.Find the amound of nickle in 30 kg of the alloy. kg Answer:_______________ |
| 2) An alloy consists of 50% copper and 16% zinc and the remaining is nickel.Find the amound of nickle in 28 kg of the alloy. kg Answer:_______________ |
| 3) An alloy consists of 11% copper and 35% zinc and the remaining is nickel.Find the amound of nickle in 11 kg of the alloy. kg Answer:_______________ |
| 4) An alloy consists of 20% copper and 27% zinc and the remaining is nickel.Find the amound of nickle in 17 kg of the alloy. kg Answer:_______________ |
| 5) An alloy consists of 46% copper and 31% zinc and the remaining is nickel.Find the amound of nickle in 23 kg of the alloy. kg Answer:_______________ |
| 6) An alloy consists of 47% copper and 38% zinc and the remaining is nickel.Find the amound of nickle in 19 kg of the alloy. kg Answer:_______________ |
| 7) An alloy consists of 50% copper and 32% zinc and the remaining is nickel.Find the amound of nickle in 16 kg of the alloy. kg Answer:_______________ |
| 8) An alloy consists of 32% copper and 14% zinc and the remaining is nickel.Find the amound of nickle in 17 kg of the alloy. kg Answer:_______________ |
| 9) An alloy consists of 33% copper and 31% zinc and the remaining is nickel.Find the amound of nickle in 11 kg of the alloy. kg Answer:_______________ |
| 10) An alloy consists of 40% copper and 11% zinc and the remaining is nickel.Find the amound of nickle in 19 kg of the alloy. kg Answer:_______________ |
| 1) An alloy consists of 40% copper and 31% zinc and the remaining is nickel.Find the amound of nickle in 30 kg of the alloy. Answer: 8.7kg SOLUTION 1 : Given: Percentage of copper = 40% Percentage of zinc = 31% Percentage of nickle = 100-(40+31) = 100-71 =29% Amount of nickle is 30 kg of the alloy = 29% of 30kg = (29÷100) x 30 = 0.29 x 30 = 8.7 kg |
| 2) An alloy consists of 50% copper and 16% zinc and the remaining is nickel.Find the amound of nickle in 28 kg of the alloy. Answer: 9.52kg SOLUTION 1 : Given: Percentage of copper = 50% Percentage of zinc = 16% Percentage of nickle = 100-(50+16) = 100-66 =34% Amount of nickle is 28 kg of the alloy = 34% of 28kg = (34÷100) x 28 = 0.34 x 28 = 9.52 kg |
| 3) An alloy consists of 11% copper and 35% zinc and the remaining is nickel.Find the amound of nickle in 11 kg of the alloy. Answer: 5.94kg SOLUTION 1 : Given: Percentage of copper = 11% Percentage of zinc = 35% Percentage of nickle = 100-(11+35) = 100-46 =54% Amount of nickle is 11 kg of the alloy = 54% of 11kg = (54÷100) x 11 = 0.54 x 11 = 5.94 kg |
| 4) An alloy consists of 20% copper and 27% zinc and the remaining is nickel.Find the amound of nickle in 17 kg of the alloy. Answer: 9.01kg SOLUTION 1 : Given: Percentage of copper = 20% Percentage of zinc = 27% Percentage of nickle = 100-(20+27) = 100-47 =53% Amount of nickle is 17 kg of the alloy = 53% of 17kg = (53÷100) x 17 = 0.53 x 17 = 9.01 kg |
| 5) An alloy consists of 46% copper and 31% zinc and the remaining is nickel.Find the amound of nickle in 23 kg of the alloy. Answer: 5.29kg SOLUTION 1 : Given: Percentage of copper = 46% Percentage of zinc = 31% Percentage of nickle = 100-(46+31) = 100-77 =23% Amount of nickle is 23 kg of the alloy = 23% of 23kg = (23÷100) x 23 = 0.23 x 23 = 5.29 kg |
| 6) An alloy consists of 47% copper and 38% zinc and the remaining is nickel.Find the amound of nickle in 19 kg of the alloy. Answer: 2.85kg SOLUTION 1 : Given: Percentage of copper = 47% Percentage of zinc = 38% Percentage of nickle = 100-(47+38) = 100-85 =15% Amount of nickle is 19 kg of the alloy = 15% of 19kg = (15÷100) x 19 = 0.15 x 19 = 2.85 kg |
| 7) An alloy consists of 50% copper and 32% zinc and the remaining is nickel.Find the amound of nickle in 16 kg of the alloy. Answer: 2.88kg SOLUTION 1 : Given: Percentage of copper = 50% Percentage of zinc = 32% Percentage of nickle = 100-(50+32) = 100-82 =18% Amount of nickle is 16 kg of the alloy = 18% of 16kg = (18÷100) x 16 = 0.18 x 16 = 2.88 kg |
| 8) An alloy consists of 32% copper and 14% zinc and the remaining is nickel.Find the amound of nickle in 17 kg of the alloy. Answer: 9.18kg SOLUTION 1 : Given: Percentage of copper = 32% Percentage of zinc = 14% Percentage of nickle = 100-(32+14) = 100-46 =54% Amount of nickle is 17 kg of the alloy = 54% of 17kg = (54÷100) x 17 = 0.54 x 17 = 9.18 kg |
| 9) An alloy consists of 33% copper and 31% zinc and the remaining is nickel.Find the amound of nickle in 11 kg of the alloy. Answer: 3.96kg SOLUTION 1 : Given: Percentage of copper = 33% Percentage of zinc = 31% Percentage of nickle = 100-(33+31) = 100-64 =36% Amount of nickle is 11 kg of the alloy = 36% of 11kg = (36÷100) x 11 = 0.36 x 11 = 3.96 kg |
| 10) An alloy consists of 40% copper and 11% zinc and the remaining is nickel.Find the amound of nickle in 19 kg of the alloy. Answer: 9.31kg SOLUTION 1 : Given: Percentage of copper = 40% Percentage of zinc = 11% Percentage of nickle = 100-(40+11) = 100-51 =49% Amount of nickle is 19 kg of the alloy = 49% of 19kg = (49÷100) x 19 = 0.49 x 19 = 9.31 kg |