Math, asked by helper1124, 1 year ago

please let me know...

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Answered by vinu3510
2
60/12 = 5 days will be the answer

helper1124: a pe square h
vinu3510: -2, -6
helper1124: kese
vinu3510: 3( a² + 8 a + 12 )= 0
vinu3510: a²+ 8a+ 12 = 0
vinu3510: a²+ 6a + 2a + 12 = 0
vinu3510: a(a+6) + 2(a+6) = 0
vinu3510: a+6 = 0 , a +2 = 0
vinu3510: a = -6, -2
helper1124: thank you
Answered by Anonymous
3
A can do pa job in 12 days
So, A's 1 day work = 1/12
In the same way,
B's 1 day work = 1/15
C's 1 day work =1/20
therefore,
A, B and C together do the job in 1/12+1/15+1/20=12/60
= 1/5
A, B and C together can do the job in 5 days
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