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CBSE Class 8 Answered

two taps can fill a water tank in 10 hours and 15 hours respectively third tap can empty the water tank in 8 hour in how much time will the tank be full if the third tape is opened 4 hrs after two taps were opened .
Asked by kritikarautela16.8cpsb | 17 Oct, 2021, 10:03: AM
answered-by-expert Expert Answer
In space 1 space hour comma space two space taps space will space fill space open parentheses 1 over 10 plus 1 over 15 close parentheses th space part space and space the space third space tap space will space empty space 1 over 8 th space part. So space for space the space first space 4 space hrs open parentheses 1 over 10 plus 1 over 15 close parentheses cross times 4 After space 4 th space hr open parentheses 1 over 10 plus 1 over 15 close parentheses cross times 4 plus open parentheses 1 over 10 plus 1 over 15 minus 1 over 8 close parentheses equals 17 over 24 space th space part space will space be space filled space each space hour So comma space to space fill space complete space tank space it space will space take space 24 over 17 space hrs
Answered by Arun | 19 Oct, 2021, 10:02: AM

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