যদি y/x=1/3 এবং x+2y=10 হয় তাহলে x=?

A 2
B 3
C 4
D 5

Correct Answer: 2

Y/X = 1/3 বা, x = 3 এখন, x + 2y = 10 3y + 2y = 10 5y = 10 y = 10/8 = 2 x = 3 × 2 = 6
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