Question

If (4x) and (3x + 5) form co-interior angles then the value of ‘x’ is _____________
a) 35°
b) 30°
c) 25°
d) 20°

Answer 1

Option c is correct

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Answer 2

Answer:

(c) 25°

Explanation:

As (4x) and (3x + 5) are co-interior angles, the sum of them is 180°.

(4x) + (3x + 5) = 180°

7x + 5 = 180°

7x = 180 - 5

7x = 175°

x = 175 ÷ 7

x = 25°