MURAL PAINTING You paint 2 square yards of a community mural in 3 hours and a friend paints 4 square yards in 5 hours. How long does it take the two
of you to paint 11 square yards when working together?

answer: c

step-by-step explanation: because you don't have to draw a point of intersection. couldyou give me brainliest?

u

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.

your answer is #3 , 8 - 3 square root of 11