It takes Juan 20 hours to rake the front lawn while his brother, Eduardo, can rake the lawn in 12 hours. How long will it take them to take the lawn working together?

Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

cutt.ly/nz6VGda

answer is : muchas/tipicas

have a nice day!

~recklesschicken

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°