exam Maths Puzzle Numerical Ability

If John cleans a house in 8 hours and Julie cleans a similar house in 6 hours, how long should it take them to clean another similar house working together?

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exam Other Question

This is not from a texbook. How would you graph the following system of inequalities?

y<= x-3
3x+y<=1

Thanks! Hello,
Can you please help me find the slpe of the line through each pair of points.
(-5,6), (-2,9)
Thank you,