Question
The sum of two numbers, x and y, is 640. If x is reduced by
8% and y is raised by 12%, the two values become equal. Determine the value of y.Solution
ATQ,
x + y = 640 ……(i)
ATQ,
0.92 × x = 1.12 × y
Or, x = (1.12/0.92) × y
So, x = (28y/23)
Put the value of ‘x’ in equation (i), we get,
(28y/23) + y = 640
Or, (51y/23) = 640
Or, y = 640 × (23/51)
So, y = 288
More Percentage Questions
(21 × 51 + 81)/(9 × 14 - 30) = ?
{(80% of 650 + 25 × 12) – 20 × ?} = 760
What will come in the place of question mark (?) in the given expression?
? = ((180 × 27) ÷ 60) + ((52 × 70) ÷ (13 × 280))3
...What will come in the place of question mark (?) in the given expression?
(√441 + √729) X 8 = ? + 518 ÷ 2
42 + 52% of 300 - ?% of 200 = 88
40% are the passing marks. A student gets 250 marks yet fails by 38 marks. What is the maximum marks?
323 × 15 + (?)² = 4989
54% of 250 = 6 × 21 + √?
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