Algebra story problem

Question

?Janet , an experienced shipping? clerk, can fill a certain order in 88 hours. Felipe?, a new? clerk, needs 99 hours to do the same job. Working? together, how long will it take them to fill the? order?

Answer 1

In one hour Janet fills 1/88 of an order

In one hours Felipe fills 1/99 of an order

 

x/88 + x/99 = 1

99x + 88x = 8712

 

Can you solve for x?