book Maths Puzzle Numerical Ability

Triangle ABC has area 240. Points X,Y,Z lie on sides AB,BC, and CA, respectively. Given that segment AX/BX=3, BY/CY=4, CZ/AZ=5, find the area of triangle XYZ.

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book Other Question

The lenght of a rectangle is (3x) yards and its width is (x+2) yards. For what value of x will the perimeter of the rectangle be 40 yards. tell if lines are parrallel, perpindicular, or neither!
3x-8y=313
x=367/5-8/5y