Math, asked by kalsaalex, 1 day ago

two pipes fill a tank in 30 mins and 40 mins separately. third pipe can empty the tank in 24 mins. if all the pipes kept open then tank can be filled in

Answers

Answered by 5280jeetsingh

0

Answer:

94 answer simply plus 30+40+24

Answered by sndpkr555

0

Answer:

1 hour

Step-by-step explanation:

tips / trick

=1/30 + 1/40 - 1/24

= 4/120 + 3/120 - 5/ 120

= 2/ 120

now ,

[change like x/y = y/x]

= 120/2

= 60

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