Home › CBSE Class 11 (Commerce) › Mathematics › Linear Inequalities › A student scored 56 and 64 in two tests. What le…
A student scored 56 and 64 in two tests. What least mark in a third test gives an average of at least 70?
A90
B100
C80
D85
Answer & Solution
Correct answer: A. 90
The total must be at least 210, and 56 + 64 = 120, so the third mark must be at least 90.
Related questions
What is the greatest integer x satisfying -12x > 30?How many natural numbers x satisfy 24x < 100?Which interval notation gives all real x with x ≥ 8?What replaces the equality sign when a linear equation becomes a linear inequality?In a list of inequality symbols, what does the symbol ≠ stand for?For a strict inequality ax + by < c, the line ax + by = c isSince (0, 0) gives 0 < 9 for x + 3y < 9, the solution region isThe solution set of ax + by < c is represented graphically by what?