sugandha teaches the poor children every 9 days while her sister every 3 days. when will be they together if they last taught 13 Apr 2011
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what u have asked here can not undrstand ur question
saad754:
it's a math question.
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1
Answer:
LCM of 3 and 9
= 9
So both of them will together teach after nine days.
13 + 9 = 22
So they will together teach on
22 April, 2011
please mark it as brainliest.
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