1.

If 217x + 131y = 913 and 131x + 217y = 827 , then the value of x + y is ....(1) 8 (2) 5 (3) 7 (4) 6

Answer»

Correct option is (2) 5

(217 + 131) (x + y) = 1740

x + y = 1740/348 = 5



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