Question 889032
shakira can plant a tray of flowers in 16 minutes. Justin bieber can plant a tray in 36 minutes. How long will it take bot of them to plant one tray if they are working together?


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1/16 + 1/36 = 1/x


LCD is 16*36*x = 576x. Multiply everything by the LCD to clear out the fractions


1/16 + 1/36 = 1/x


<font color="green">576x*</font>1/16 + <font color="green">576x*</font>1/36 = <font color="green">576x*</font>1/x


36x + 16x = 576


52x = 576


x = 576/52


x = 11.076923076923 (this is approximate)



It will take roughly <font color="red">11.076923076923 minutes</font> if they worked together