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Mathematics
Mathematics
Problem
The measures of two adjacent angles are
(
4
x
+
20
)
∘
(4x+20)^{\circ}
(
4
x
+
20
)
∘
and
(
2
x
+
40
)
∘
(2x+40)^{\circ}
(
2
x
+
40
)
∘
. If their non-common arms form a straight line, find the value of
x
x
x
. a)
15
15
15
b)
30
30
30
c)
20
20
20
d)
10
10
10
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