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 10% copper and 39% zinc and the remaining is nickel.Find the amound of nickle in 17 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 19 kg of the alloy. kg Answer:_______________ |
| 3) An alloy consists of 13% copper and 25% zinc and the remaining is nickel.Find the amound of nickle in 21 kg of the alloy. kg Answer:_______________ |
| 4) An alloy consists of 24% copper and 21% zinc and the remaining is nickel.Find the amound of nickle in 10 kg of the alloy. kg Answer:_______________ |
| 5) An alloy consists of 33% copper and 14% zinc and the remaining is nickel.Find the amound of nickle in 10 kg of the alloy. kg Answer:_______________ |
| 6) An alloy consists of 45% copper and 28% zinc and the remaining is nickel.Find the amound of nickle in 11 kg of the alloy. kg Answer:_______________ |
| 7) An alloy consists of 37% copper and 11% zinc and the remaining is nickel.Find the amound of nickle in 23 kg of the alloy. kg Answer:_______________ |
| 8) An alloy consists of 17% copper and 16% zinc and the remaining is nickel.Find the amound of nickle in 13 kg of the alloy. kg Answer:_______________ |
| 9) An alloy consists of 28% copper and 31% zinc and the remaining is nickel.Find the amound of nickle in 24 kg of the alloy. kg Answer:_______________ |
| 10) An alloy consists of 22% copper and 34% zinc and the remaining is nickel.Find the amound of nickle in 30 kg of the alloy. kg Answer:_______________ |
| 1) An alloy consists of 10% copper and 39% zinc and the remaining is nickel.Find the amound of nickle in 17 kg of the alloy. Answer: 8.67kg SOLUTION 1 : Given: Percentage of copper = 10% Percentage of zinc = 39% Percentage of nickle = 100-(10+39) = 100-49 =51% Amount of nickle is 17 kg of the alloy = 51% of 17kg = (51÷100) x 17 = 0.51 x 17 = 8.67 kg |
| 2) An alloy consists of 24% copper and 25% zinc and the remaining is nickel.Find the amound of nickle in 19 kg of the alloy. Answer: 9.69kg SOLUTION 1 : Given: Percentage of copper = 24% Percentage of zinc = 25% Percentage of nickle = 100-(24+25) = 100-49 =51% Amount of nickle is 19 kg of the alloy = 51% of 19kg = (51÷100) x 19 = 0.51 x 19 = 9.69 kg |
| 3) An alloy consists of 13% copper and 25% zinc and the remaining is nickel.Find the amound of nickle in 21 kg of the alloy. Answer: 13.02kg SOLUTION 1 : Given: Percentage of copper = 13% Percentage of zinc = 25% Percentage of nickle = 100-(13+25) = 100-38 =62% Amount of nickle is 21 kg of the alloy = 62% of 21kg = (62÷100) x 21 = 0.62 x 21 = 13.02 kg |
| 4) An alloy consists of 24% copper and 21% zinc and the remaining is nickel.Find the amound of nickle in 10 kg of the alloy. Answer: 5.5kg SOLUTION 1 : Given: Percentage of copper = 24% Percentage of zinc = 21% Percentage of nickle = 100-(24+21) = 100-45 =55% Amount of nickle is 10 kg of the alloy = 55% of 10kg = (55÷100) x 10 = 0.55 x 10 = 5.5 kg |
| 5) An alloy consists of 33% copper and 14% zinc and the remaining is nickel.Find the amound of nickle in 10 kg of the alloy. Answer: 5.3kg SOLUTION 1 : Given: Percentage of copper = 33% Percentage of zinc = 14% Percentage of nickle = 100-(33+14) = 100-47 =53% Amount of nickle is 10 kg of the alloy = 53% of 10kg = (53÷100) x 10 = 0.53 x 10 = 5.3 kg |
| 6) An alloy consists of 45% copper and 28% zinc and the remaining is nickel.Find the amound of nickle in 11 kg of the alloy. Answer: 2.97kg SOLUTION 1 : Given: Percentage of copper = 45% Percentage of zinc = 28% Percentage of nickle = 100-(45+28) = 100-73 =27% Amount of nickle is 11 kg of the alloy = 27% of 11kg = (27÷100) x 11 = 0.27 x 11 = 2.97 kg |
| 7) An alloy consists of 37% copper and 11% zinc and the remaining is nickel.Find the amound of nickle in 23 kg of the alloy. Answer: 11.96kg SOLUTION 1 : Given: Percentage of copper = 37% Percentage of zinc = 11% Percentage of nickle = 100-(37+11) = 100-48 =52% Amount of nickle is 23 kg of the alloy = 52% of 23kg = (52÷100) x 23 = 0.52 x 23 = 11.96 kg |
| 8) An alloy consists of 17% copper and 16% zinc and the remaining is nickel.Find the amound of nickle in 13 kg of the alloy. Answer: 8.71kg SOLUTION 1 : Given: Percentage of copper = 17% Percentage of zinc = 16% Percentage of nickle = 100-(17+16) = 100-33 =67% Amount of nickle is 13 kg of the alloy = 67% of 13kg = (67÷100) x 13 = 0.67 x 13 = 8.71 kg |
| 9) An alloy consists of 28% copper and 31% zinc and the remaining is nickel.Find the amound of nickle in 24 kg of the alloy. Answer: 9.84kg SOLUTION 1 : Given: Percentage of copper = 28% Percentage of zinc = 31% Percentage of nickle = 100-(28+31) = 100-59 =41% Amount of nickle is 24 kg of the alloy = 41% of 24kg = (41÷100) x 24 = 0.41 x 24 = 9.84 kg |
| 10) An alloy consists of 22% copper and 34% zinc and the remaining is nickel.Find the amound of nickle in 30 kg of the alloy. Answer: 13.2kg SOLUTION 1 : Given: Percentage of copper = 22% Percentage of zinc = 34% Percentage of nickle = 100-(22+34) = 100-56 =44% Amount of nickle is 30 kg of the alloy = 44% of 30kg = (44÷100) x 30 = 0.44 x 30 = 13.2 kg |