Question 905971
{{{x+y=90}}} "two angles are complementary"
{{{y=(4/5)*x}}} "the measure of one is 4/5 the measure of the other one"
{{{y=0.8x}}}
Substitute y=(0.8x)
{{{x+(0.8x)=90}}}
{{{1.8x=90}}}
{{{x=50}}}
{{{y=0.8*50=40}}}
Ans:50 and 40