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Shares of a total spent as percents: the remainder or the total

This type of question, asked 3 times: 23 Sep 2025 S1, 24 Sep 2025 S1, 26 Sep 2025 S3. All 3 questions below, oldest first.

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  1. Question 1

    23 Sep 2025 S1

    60
    Out of her total monthly income, a woman spends 60%60\% on household expenses and 15%15\% on savings. The remaining is spent on other items. What percentage of her income is spent on these other items?

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  2. Question 2

    24 Sep 2025 S1

    61
    A bag contains 20%20\% red balls, 30%30\% green balls and the rest blue balls. If there are 80 blue balls, what is the total number of balls?

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  3. Question 3

    26 Sep 2025 S3

    57
    A man spends 30% of his salary on rent, 20% on groceries, and 25% on other expenses. If he saves Rs. 9,000, what is his salary?

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