⟩ If three tapes are filling a tank of capacity of 500lit with speed of 30lit/sec, 48lit/sec and 36lit/sec. Find after how long time tank will fill?
In 1 sec =30lit+36+48=114
so 500 lit ==500/114sec.
In 1 sec =30lit+36+48=114
so 500 lit ==500/114sec.
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