Pipe P and pipe Q alone can fill a tank in 12 minutes and 2 minutes respectively. If they work alternately starting from P then the tank can be filled in 13 (1/4) minutes, then find the value of (z + 5).

A.9

B 15

C 18

D. 20

E 24

asked by guest
on Jan 21, 2025 at 2:54 am



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