Haroon's motorcycle tank of petrol lasts 10 days. If he starts using 25% more fuel daily, how many days will a full tank last?
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Answer: D. 8days
Explanation
An increase in daily fuel consumption by twenty five percent raises the daily usage rate proportionally. Dividing the original tank capacity duration by the new consumption multiplier determines the remaining days. Calculating ten divided by one point twenty five yields exactly eight days of total tank duration. Inverse proportionality applies when consumption rate increases while total available resources remain constant. A twenty five percent increase can be expressed numerically as multiplying the base rate by one point twenty five. Fuel efficiency problems require balancing daily usage rates against fixed storage capacities.
Vehicle fleet managers calculate daily fuel consumption rates to schedule efficient refueling intervals. Energy conservation programs track daily resource usage to extend the longevity of stored fuel reserves. Practical arithmetic problems help consumers manage household utilities and consumable supplies effectively. Option A suggests five days which cuts the tank duration in half through faulty logic. Option B proposes six days which fails to match the inverse proportionality calculation. Option C offers seven days which underestimates the remaining duration of the fuel tank.
- Subject
- Mathematics
- Category
- Mathematics
- Topic
- —
- Difficulty
- medium
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