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यदि टंकी का `(3)/(5)` भाग 1 मिनट में भर जाता है , तो बचा हुआ भाग कितने समय में भर जायगा ?A. 40 secB. 30 secC. 36 secD. 24 sec |
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Answer» Correct Answer - a (a) let total capacity of cistern is 5 units (हिन्दी) Filled part of the cistern (हिन्दी)=5 unit`xx(3)/(5)=3` units Rest part of the cistern (हिन्दी)=5-3=2 units 3 unt filled in =60 Sec. 1 unit filled in `=(60)/(3)` 2 units filled in `=(60)/(3)xx2=40` sec. |
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