If Nandita saves 12 litres of water daily by turning off the tap, how many litres does she save in a week?
Answer
84 litres
The correct answer is 84 litres — Hence, 84 litres are saved in a week.
Step-by-step solution
- Recognise that she saves 12 litres each day.
- Multiply the daily saving by 7 days to find the weekly saving.
- Compute 12 × 7 = 84.
- Hence, 84 litres are saved in a week.
Common mistake: Forgetting to multiply the daily amount by the number of days
Concept tested: Water saving calculation
Published · How this solution was prepared and checked
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