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CBSE Class 8 Answered

Two angles are in the ratio1:2 on increasing the smaller 6° and decreasing the large angle by 6° the ratio changed to2:3 what were the original angle
Asked by Nimmi | 23 Jan, 2019, 10:04: AM
answered-by-expert Expert Answer
Let the angles are x and 2x.
small angle increased by 6° and bigger one decreased by 6° to make ratio 2:3
 
Hence begin mathsize 12px style fraction numerator x space plus space 6 over denominator 2 x space minus 6 space end fraction space equals space 2 over 3 space space space space o r space space space space space space 3 x space plus space 18 space equals space 4 x space minus 24 space space space space o r space space x space equals space 30 end style
Hence initial angles are 30°  and 60°
Answered by Thiyagarajan K | 23 Jan, 2019, 10:23: AM

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