exam Maths Puzzle Numerical Ability

How do I solve the following equation for P?

-3 = (4000/(130-P))* ((130+P)/(6000+10000))

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exam Other Question

The two parallel lines a and b are cut by a transversal c. Find the missing angles, and give a brief explanation as how you found each one.

Additional information: two straight It took 6 hours to travel to town, and it took up to 8 hours to travel back, becasue your return trip speed was 10mph less than the outgoing speed. What was your return trip speed?

Please assist,I have difficulty with word problems.....
Thanks!