Question
In an exam, Aman scored 60% marks and failed by 85 marks
whereas Raj scored 80% marks in the same exam and scored 65 marks more than the passing marks. Find the maximum marks of the exam.Solution
ATQ; Let the maximum marks of the exam be ‘100x’ Marks scored by Aman = 100x × 0.60 = ‘60x’ Marks scored by Raj = 100x × 0.80 = ‘80x’ According to question: 60x + 85 = 80x – 65 Or, 80x – 60x = 85 + 65 Or, 20x = 150 Or, x = 7.5 Therefore, maximum marks of the exam = 100x = 100 × 7.5 = 750
- Which of the following numbers is not a perfect square?
A lending library has a fixed charge for the first 7 days and an additional charge for each day thereafter. Sahil paid Rs . 215 for a book kept for 15 ...
- A number exceeds 40 times its reciprocal by 7/8. Determine the number.
Find the greatest 4‑digit number which is exactly divisible by 12, 15 and 20.
In a two digit positive number, the digit in the unit’s place is equal to the square of the digit in ten’s place, and the difference between...
- Find the median of the following observations:
120, 125, 115, 130, 140, 135, 145 - Find the smallest number that is divisible by 14, 28, and 42.
Determine the highest possible value of (x + y) if the number '3x725y4' is divisible by 12.
Find the least number to be added to 1500 to make it a perfect square.
If y = 5, then what is the value of 10y