Question

Plzzz answer the b part

Answer 1

Answer:

x , x + 1

Step-by-step explanation:

(x + x +1 ) × 3 = 810

(2x + 1) × 3 = 810

6x + 3 = 810

6x = 810 - 3

6x = 807

x = 807 / 6

x = 134.5

therefore two consecutive no. are

x = 134.5 &

x + 1 = 135.5

Answer 2

$let \: two \: numbers \: be \: x \: and \: x + 1 \\ acc. \: to \: question \: no. \: are \: multiples \: of \: 3 \: then... \\ 3x \: \: \: \: \: 3x + 3 \\ 3x(3x + 3) = 810 \\ 9x {}^{2} + 9x - 810 = 0 \\ x {}^{2} + x - 90 \\ x {}^{2} + 10x - 9x - 90 \\ x(x + 10) - 9(x + 10) \\ (x - 9)(x + 10) \\ x = - 10 \: \: not \: possible \\ so \: x = 9 \\ so \: numbers \: are \\ 3 \times 9 = 27 \\ 3 \times 9 + 3 = 30 \\ 27 \: and \: 30$

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