Let's break down the statements regarding savings to analyze their validity.
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Savings of $100 in 5 months:
- If you're saving $100 in 5 months, that would typically imply a rate of savings rather than a total. If we assume you're saving this amount regularly every 5 months, you can calculate how much you'd save in 15 months.
- In 15 months, you would complete 3 cycles of 5 months. Therefore, if you save $100 every 5 months, in 15 months, you would save: \[ 3 \times 100 = 300 \text{ dollars} \]
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Effect of saving $110 in 5 months:
- If you save $110 every 5 months, in 15 months (which is still 3 cycles), you save: \[ 3 \times 110 = 330 \text{ dollars} \]
- This indicates that changing your saving amount from $100 to $110 would indeed increase your total savings from $300 to $330.
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Statement about saving $285:
- If one supposed scenario suggests saving $285 in 15 months based on some context that is not provided, we cannot directly verify it without additional information.
- However, if you save $110 every 5 months, your savings is calculated as above (which equals $330), not $285.
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Saving $300:
- If you save $100 every 5 months, as previously calculated, at 15 months, you do save $300.
- If you decide to change your savings to $110, your total savings will again increase to $330, not decrease.
To summarize:
- A: If you save $100 for 15 months, you save $300. But saving $110 instead increases it to $330. So, statement A is incomplete.
- B: In 15 months, if you save $110, you'll have $330, not $500.
- C: The claim that you will save $285 cannot be substantiated unless specific details are provided.
- D: If you save $300 with the $100 savings, switching to $110 will NOT decrease your savings; it will increase to $330.
Thus, most statements appear incorrect or require further clarification.