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At 80 minutes that is One hour and 20 minutes they will make card together
mamtasuman79:
Can U give me proper sol. Pls
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Answer:
Step-by-step explanation:
10 = 2 x 5
16 = 2 x 2 x 2 x 2
20 = 2 x 2 x 5
l.c.m= 2⁴ x 5
= 16 x 5
= 80
they start preparing after 80 minutes (or) 1 hour and 20 minutes
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