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7th Class Mathematics Comparing Quantities Question Bank Comparing Quantities

  • question_answer
    The number of seats for admission is increased by 20% every year between 1999 to 2002. If the number of seats in 1999 was 2000, what was the number of seats in 2002?        

    A)  2880               

    B)  3456

    C)  4356               

    D)  3200   

    Correct Answer: B

    Solution :

    (b) 20% increase per year \[\Rightarrow \] Increase for 3 years. \[=2000\times \frac{120}{100}\times \frac{120}{100}\times \frac{120}{100}=3456\] Tips: \[122=144;{{12}^{3}}=1728;\] this maybe committed to memory as it will help in this question as well as in other chapters.


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