Help please find the value of x

(90/13)°

Step-by-step explanation:

Given angles are,

40° , 3x + 8° , 10x +40°

Therefore, by the problem,

=> 40° + 3x+8° + 10x+42° = 180° [ Angle sum property of triangle]

=> 3x + 10x = 180 - 40 - 42 - 8

=> 13x = 90

Hence, required value of x is (90/13)°

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step-by-step explanation:

actually your concept is wrong

step-by-step explanation:

150% of x =300

150x=300×100

x=(300×100)÷150

x=200