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Question

If two angles in a rectangle are (x+30)° and (y+50)°, then the value of 'x+y' is

A
80°
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B
90°
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C
100°
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D
110°
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Solution

The correct option is C 100°
We know that in a rectangle, each angle is equal to 90.
So, each of the angles (x+30) and (y+50) need to be equated to 90. This gives us the following equations:
(x+30)=90 and
(y+50)=90
Solving these equations, we get x=60 and y=40 respectively and therefore, x+y=100.

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