Assemblers 47483

Two assemblers with the same daily output were to complete the assembly in 12 days. After 4 days, one of them got sick, and the other finished the assembly in another 16 days. How long would it take everyone to do the assembly by themselves?

Correct answer:

a =  24 d
b =  24 d

Step-by-step explanation:

12/a + 12/b= 1 4/a+(16+4)/b=1  x = 1/a; y=1/b  12 x+12 y=1 4 x+(16+4) y=1  12x+12y=1 4x+20y=1  Row2124 Row1Row2 12x+12y=1 16y=0.67  y=160.66666667=0.04166667 x=12112y=12112 0.04166667=0.04166667  x=2410.041667 y=2410.041667  a=1/x=1/0.0417=24 d
b=1/y=1/0.0417=24 d



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