Three bells tall at interval of 9,11215in respectively If they start tolling together after what time they next toll together??
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Sol:
L.C.M ( 9,12,15)
9 = 3 x3
12 = 2 x 2 x 3
15 = 3 x 5
L.c.m ( 9,12,15) = 3x3x2x2x5 = 180 min or 3 hours.
∴ After 3 hours they toll together.
L.C.M ( 9,12,15)
9 = 3 x3
12 = 2 x 2 x 3
15 = 3 x 5
L.c.m ( 9,12,15) = 3x3x2x2x5 = 180 min or 3 hours.
∴ After 3 hours they toll together.
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