A + B do a certain work in 18 days B+C in 24 days and C and A in 36 days in how many days the work will completed if they all together and they all work sepratelly.
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Answered by
1
do u know the answer
is it C=21
B=3
A=15
is it C=21
B=3
A=15
Answered by
0
A+B=18......(1)
B+C=24..... (2)
C+A=36...... (3)
Solve 1,2&3
2A+2B+2C=18+24+36
2 (A+B+C)=78
A+B+C=78/2
A+B+C=39
A+B+C=39
A+24=39
A=15
A+B+C=39
18+C=39
C=21
A+B+C=39
15+B+21=39
B=3
B+C=24..... (2)
C+A=36...... (3)
Solve 1,2&3
2A+2B+2C=18+24+36
2 (A+B+C)=78
A+B+C=78/2
A+B+C=39
A+B+C=39
A+24=39
A=15
A+B+C=39
18+C=39
C=21
A+B+C=39
15+B+21=39
B=3
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