Question

80 %of an angle is the suppliment of 140°.find the angle

Answer 1

Hello Dear!!!

Here's your answer....

Given that,

80% of an angle is supplement of 140

Sum of supplementary angles is 180°

140+x= 180

x = 40°

80% of an angle is 40°

Let,

y be the angle.

Then angle is

80y/100 = 40

80y= 40*100

80y= 4000

y = 4000/80

y = 50

Angle is 50°

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Answer 2

Let the required angle be y.
Then,
80/100 .y=40 (Supplement of 140 is 40)
=>4/5.y=40
=>y=40x5/4
=>y=50
Ans is 50.

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