- A62.5%
- B37.5%
- C50%
- D58%
Step-by-Step Solution
From E to F there are 8 equal steps and the needle is at the 5th mark: . (37.5% is the empty part.)
Answer: A) 62.5%
The fuel gauge of Papa's car is shown. The marks divide the dial from E (empty) to F (full) into equal steps. What percentage of the tank is full?
Class 7Comparing QuantitiesComparing Quantities
Key idea: Three forms of the same number
Fractions, decimals, and percentages are three notations for the same idea. Convert freely:
- **Fraction → percentage**: multiply by 100. .
- **Percentage → fraction**: divide by 100 and simplify. .
- **Decimal → percentage**: shift two places right. 0.34 = 34%.
- **Percentage → decimal**: shift two places left. 8% = 0.08.
With practice, this becomes automatic and you can move between forms without thinking.
- **Fraction → percentage**: multiply by 100. .
- **Percentage → fraction**: divide by 100 and simplify. .
- **Decimal → percentage**: shift two places right. 0.34 = 34%.
- **Percentage → decimal**: shift two places left. 8% = 0.08.
With practice, this becomes automatic and you can move between forms without thinking.
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