x = 3x - 70 as corresponding angles
2x = 70
x = 35
∠LMN = 3x - 70 = 3*35 - 70 =35⁰
∠LMN = 35⁰
Sally can paint a house in 4 hours; Which means in 1 hour she can paint 1/4th of the house.
John can paint the same house in 6 hours. Which means in 1 hour she can paint 1/6th of the house.
Together in 1 hour they can paint: - 1/4 + 1/6 = 5/12th of the house.
Total Hours for painting the house together will be 12/5 = 2.4 Hours.
So the answer is 2 hours and 24 minutes
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