Let the the two given supplementary angles be A & B respectively. Ratio of angle A to the ratio of angle B is 5/7. And we've been asked to find out the measure of angle A & B.
As we know that supplementary angle are the ones which have the sum of angles and tend to 180°.Thus we can write by forming equation that,
Given are: 250 adults and 180 parents so we can solve the number of not parents not parents = 250 - 180 not parents = 70 then we can number of people of votes for no no not parents = 70 - 40 = 30 no parents = 180 - 150 = 30 yes no parents 150 30 not parents 40 30