exam Maths Puzzle Numerical Ability

X=2y-7
3X +2y=-5

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Two jeeps at a 90 degree angle to each other try to pull a car out of the snow. If one jeep exerts a force of 600lbs. and the other exerts a force of 800lbs , what is the resulting force on the car stuck in the snow? Yuri has a board that is 98 in long. He wishes to cut the board into two pieces so that one piece will be 10 in. longer than the other. What should the length of each piece be?