Question

In the given figure, find x *


20
25
30
35​

Answer 1

we know that the sum of all the angles of triangles = 180°

so, (x+10°)+(3x+5°)+(2x+15°)= 180°

=> x+10°+3x+5°+2x+15°=180°

=> 6x+30°=180°

=>6x=150°

=>x=25°

so option b) is correct

please mark me as brainliest

Answer 2

$\huge\sf\underline\red{Answer}$

$\small\sf\underline\red{sum \: of \: angles \: = 180 \:°i.e.} \: \small\sf\underline\green{(2x + 15) + (x + 10) + (3x + 5) = 180} \\ \\ \small\sf\underline\pink{2x + x + 3x + 5 + 10 + 15 = 180}$

$\small\sf\underline\purple{6x + 30 = 180}$

$\small\sf\underline\blue{6x = 180 - 30. \: \: so \: 6x = 150}$

$\small\sf\orange{x = \frac{150}{6} = 25}$

$\bf\underbrace\red{SECOND\:OPTION\:IS\:CORRECT}$

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