Question

The sum of two numbers is 50. If one of the numbers is twice of the other, then what is the
difference of the numbers?​

Answer 1

Answer:

$let \\ one \: of \: the \: number \: be \: x \\ other \: number \: be \: y \\ \\ given \: \\ x + y = 50........eq.1 \\ x = 2y \\ x - 2y = 0.........eq.2 \\ \\ the \: difference \: between \: two \: equatins = \\ x + y = 50 \\ x - 2y = 0 \\ ......................................... \\ x + y = 50 \\ - x + 2y = 0 \\ ........................................... \\ 3y = 50 \\ y = \frac{50}{3} \\ y = 16.6 \\ then \: x = 2y \: so \: x = 2 \times 16.6 = 33.2$

$\therefore$

$x = 33.2 \: and \: \: y = 16.6$

their difference is 33.2 - 16.6 = 16.6

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