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6th Class Mathematics Fractions Question Bank Fractions and Decimals

  • question_answer
    If \[2.5+0.5-\left[ 1.6-\left\{ 3.2-\left( 3.2+2.1\div K \right) \right\} \right]=0.65\] find K=?

    A)  \[0.09\]

    B) \[0.7\]              

    C) \[7\]                             

    D) \[~2.8\]

    Correct Answer: D

    Solution :

    \[2.5+0.5-\left[ 1.6-\left\{ 3.2-3.2-\left( 2.1+K \right) \right\} \right]=0.6\] \[3-\left[ 1.6+2.1+K \right]=0.65\] \[1.6+2.1+K=2.35\] \[2.1\div K=2.35-1.\] \[2.1\div K=0.75\] \[\frac{2.1}{K}=0.75\] \[K=\frac{2.1}{0.75}=\frac{21}{7.5}=2.8\]


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