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5th Class Mathematics Arithmetic Question Bank Arithmetic

  • question_answer
    It \[P+Q=105\] and\[P-Q=45\], what is\[P:Q\]?

    A) \[1:5\]                           

    B) \[2:5\]               

    C) \[3:5\]               

    D)        \[5:2\]               

    Correct Answer: D

    Solution :

    \[P+Q=105\] \[P-Q=45\] So, \[2P=105+45=150\] \[\Rightarrow \]\[P=75\] Then, \[Q=P-45=75-45=30\] \[\therefore \]\[P:Q=75:30=5:2\]


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