Subject
Quantitative Aptitude
Topic
Average
The average marks of 10 students on a class are 85. When the highest and the lowest marks are dropped, the average becomes 84. If the highest marks are 95, then find out the lowest marks.
The average marks of 10 students on a class are 85. When the highest and the lowest marks are dropped, the average becomes 84. If the highest marks are 95, then find out the lowest marks.
ক)
85খ)
78গ)
60ঘ)
89ঙ)
None of theseExplanation
Let the lowest marks be x. Total marks of 10 students = 10 × 85 = 850 Now, on dropping highest and lowest, the average becomes 84. Therefore, the total marks of remaining 8 = 8 × 84 = 672 Now the total marks are given by- ⇒ 850 = 672 + 95 + x ⇒ 850 = 767 + x ⇒ x = 850 – 767 ⇒ x = 83 Hence, the lowest marks are 83.Related questions
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