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Three pipes x, y, z leave three differen...

Three pipes x, y, z leave three different chemicals A, B, C in a tank. These pipes can fill the tank in 20, 25 and 40 minutes, respectively. If all the pipes are left open for 10 minutes, what will be the ratio of chemical B in the tank?
तीन पाइप x, y, z एक टैंक में तीन भिन्न भिन्न रसायन A , B , C भरते है | ये पाइप क्रमश : 20 , 25 और 40 मिनट में टैंक को भर सकते है | यदि सभी पाइपों को 10 मिनट के लिए खुला छोड़ दिया जाता है तो टैंक में रसायन B का अनुपात क्या होगा ?

A

`4/7`

B

`13/23`

C

`8/23`

D

`11/15`

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