A boy was asked to find 3/5 of a fraction. Instead, he divided the fraction by 2/5 and got an answer which exceeded the correct answer by 36/75. The correct answer is
1). 41/95
2). 72/475
3). 71/25
4). 73/95
Let the initial fraction be x.
∴ Correct answer = 3x/5
Given, he divided the fraction by 2/5 and got an answer which exceeded the correct answer by 36/75.
$(\begin{array}{l} \therefore \frac{x}{{\frac{2}{5}}} = \frac{{3x}}{5} + \frac{{36}}{{75}}\\ \Rightarrow \frac{{5x}}{2} = \frac{{45x + 36}}{{75}} \end{array})$
⇒ 125x = 30x + 24
⇒ x = 24/95
Correct answer = 3x/5 = 72/4752. Which of the following is a factor of the polynomial (4x3 – 2x2 – 5x + 1)?
3. What value should come in the place of question mark (?) in the following questions?
4. If xy = 48 and $x^{2} + y^{2} = 100$, then (x + y) is
6. If 7x + 2 ≥ x - 2 and 7 + 2x ≥ 3 + 3x; then x can take which of the following values?