PRC-2 · Chapter 1 · Question 12 of 45
Assuming a linear cost relationship, if 5 notebooks cost Rs. 150 and 8 notebooks cost Rs. 240, what is the cost of 1 notebook?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) Rs. 30
Explanation
The rate of change (slope) represents the cost per unit. (240 - 150) / (8 - 5) = 90 / 3 = 30. Therefore, each notebook costs Rs. 30.
More Linear And Quadratic Equations MCQs
- Q14In the expression 5x^2 + 8x - 3, what are the distinct components separated by the mathematical operation symbols called?
- Q15How many possible values (roots) does a standard quadratic equation of the form ax^2 + bx + c = 0 typically have?
- Q16The product of two positive integers is 45 and when added together the result is 14. Find the integers.
- Q17Solve the following equation for the value of x: 10x - (200 / x) = 10.
- Q18Two times the square of a positive number, when added to five times the same number, results in 33. What is the number?