The average score of 4 tests is 72. The first 3 scores are 94, 67, 67. What is the last score?
Answer and explanation
Correct answer: D. 60
- Step 1: Total of all scores .
- Step 2: Last score .
Answer
60.
Why not the others: 72: it assumes the last score equals the average. 76: it uses the mean of the known scores.
Practise more Averages and Rates.
Free questions with an explanation for every one, and full timed Civil Service Recruitment: CRE and Basic Law Test (Hong Kong) mock tests.
More Averages and Rates questions
- The average score of 5 tests is 61. The first 4 scores are 78, 55, 54, 89. What is the last score?
- The average score of 5 tests is 63. The first 4 scores are 78, 68, 60, 59. What is the last score?
- The average score of 4 tests is 65. The first 3 scores are 75, 60, 65. What is the last score?
- The average score of 4 tests is 67. The first 3 scores are 62, 85, 52. What is the last score?
- The average score of 5 tests is 60. The first 4 scores are 77, 47, 56, 72. What is the last score?
- The average score of 5 tests is 73. The first 4 scores are 71, 61, 80, 54. What is the last score?