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प्रश्न
An average urban Indian uses about 150 litres of water every day.
| Activity | Litres per person per day |
| Drinking | 3 |
| Cooking | 4 |
| Bathing | 20 |
| Sanitation | 40 |
| Washing clothes | 40 |
| Washing utensils | 20 |
| Gardening | 23 |
| Total | 150 |
What per cent of water is used for bathing and sanitation together per day?
उत्तर
On the basis of given details, water used for bathing per day = 20 L
Water used for sanitation = 40 L
Total water used per day = 150 L
Percentage of water is used for bathing and sanitation together per day
= `(20 + 40)/150 xx 100`
= `60/150 xx 100`
= `600/15`
= 40%
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