Question
'P', 'Q', and 'R' appeared in an exam. 'P' scored 60%
marks in an exam which was 90 more than passing marks. Whereas 'Q' scored 50% marks in the exam which was 20 marks less than the passing marks. If 'R' scored 85% marks in the exam, then find the difference between marks scored by 'P' and 'R' in the exam.Solution
ATQ, Let the total marks be 'U'. So, (60% of U) - 90 = (50% of U) + 20 Or, 0.6U - 90 = 0.5U + 20 Or, 0.1U = 110 So, U = 1100 Required difference = (0.85 - 0.6) × 1100 = 275
- If p = 40 - q - r and pq + r(p + q) = 400, then find the value of (p² + q² + r²).
A takes 8 hours more than the time taken by B to cover a distance of 160 km. If A doubles his speed. he takes 3 hours more than B to cover the same dist...
If x4 + x3 + x2 + x + 1 = 0, then find the value of x1525 + x720 + 14 + x320 =?
What value should come in place of question mark (?) in the following question. (You need not to calcualte the exact value)
(36.004 + 34.997)
(a+2 )² + (b-5)² + (c+3)² = 0
Find the value of √ (a + b + c) ?
...- If (x - y) = 4, then find the value of (x³ - y³ - 12xy).
(x – 4)2 + (y + 3) 2 + (z – 5) 2 = 0, then find the value of 2x + 3y – z.
If (a + b + c) = 9, find (a – 4)3 + (b – 2)3 + ( c – 3)3 – 3(a – 4 ) (b – 2 ) (c &n...
Relevant for Exams:
