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Difference between the totals of two series or groups

This type of question, asked 4 times: 21 Jul 2023 S1, 18 Sep 2024 S1, 25 Sep 2024 S2, 25 Sep 2024 S3. All 4 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    21 Jul 2023 S1

    75
    What is the difference between the total production of Cotton and Khadi? Note: Ignore negative sign, if any

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  2. Question 2

    18 Sep 2024 S1

    52
    The given table shows the number of televisions that were sold by different showrooms in years 2015 to 2019.
    Year/ShowroomABCD
    2015212200205208
    2016210215225220
    2017190204212205
    2018198212222224
    2019218192205203
    Find the difference between the sale of televisions from showrooms A, B and C in 2017 and the sale of televisions from showrooms B, C and D in 2019?

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  3. Question 3

    25 Sep 2024 S2

    56
    Study the given table and answer the question that follows. The given table shows the number of students enrolled in different academic faculties of an institution during 2016 – 2019.
    YearScienceCommerceHumanities
    2016550457699
    2017584554574
    2018625332743
    20196764441223
    From 2016 to 2019, what is the difference between the total number of students enrolled in science and that of students enrolled in humanities?

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  4. Question 4

    25 Sep 2024 S3

    69
    The number of pages printed by two printers P1 and P2 over three days are given in the following table. Study the table carefully and answer the question given below.
    Days/PrinterP1P2
    Monday200250
    Tuesday150300
    Wednesday225210
    What is the difference between the total number of pages printed by the two printers during these three days?

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