Question

2. Three angles of a triangle (3x + 50), (x + 20) and
(2x + 20). Greatest angle of the triangle is -
(A) 90°
(B) 120°
(C) 125°
(D) 100°​

Answer 1

Answer:

The question is inappopriate....

Step-by-step explanation:

3x+50+x+20+2x+20=180 (sum of all angles of triangle is 180').

6x+90=180

6x=180-90

6x=90

x=15

substituting values...

3x+50= 3(15)+50= 95

x+20=15+20=35

2x+20=2(15)+20=50

:. Greatest angle is 95 which isn't in option.

Answer 2

Answer:

But the answer is 125.

$3x + 50 + x + 20 + 2x + 20 = 180$

$6x + 90 = 180$

$6x = 180 - 90$

$6x = 90$

$x = 90 \div 6$

$x = 15$

$now \: we \: will \: do \: 3x + 50 = 3 \times 15 + 50 = 95$

$now \: next \: is \: = x + 20 = 15 + 20 = 35$

$now \: next \: is \: = 2x + 20 = 2 \times 15 + 20$

$= 50$