A man is five times as old as his son. In four years'...
A man is five times as old as his son. In four years' time, the product of their ages would be 340. If the son's age is y, express the product of their ages in terms of y.
5y\(^2 - 16y - 380 = 0\)
5y\(^2 - 24y - 380 = 0\)
5y\(^2 - 16y - 330 = 0\)
5y\(^2 + 24y - 324 = 0\)
Correct answer is D
Man = x, Son = y
x = 5y
(x + 4)(y + 4) = 350
(5y + 4)(y + 4) = 340
5y\(^2\) + 20y + 4y + 16 - 240 = 0
5y\(^2\) + 24y - 324 = 0
If y = \(\frac{(2\sqrt{x^2 + m})}{3N}\), make x the subject of the formular...
Solve for x: (x2 + 2x + 1) = 25...
If x is inversely proportional to y and x = 2\(\frac{1}{2}\) when y = 2, find x if y = 4...
Simplify \(\frac{324 - 4x^2}{2x + 18}\) ...
I am x years old and my brother is 3 years older how old was my brother last year ...
Find the values of x which satisfy the equation 16x - 5 x 4x + 4 = 0...