GRE Exam Numerical Ability Algebra

If the equations 5x+9y+17z=a,4x+8y+12z=b and 2x+3y+8z=c have at least one solution for x,y and z and a,b and c are not equal to 0,then which of the following is true?

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GRE Other Question

the cost price of 16 apples is equal to the selling price of 10 apples. the cost price of 12 oranges is equal to the selling price of 16 oranges and the cost price of 6 mangoes is equal to the selling price of 4 mangoes . if the ratio of the cost price of 1 apple, 1 orange, and 1 mango in the ratio of 1:1:2,then find the net profit percent on the sale of 1 apple,2 oranges and 2 mangoes. synonyms and anonyms