Question 1155818
known machine rate {{{1/40}}}
unknown machine rate {{{cross(1/40+1/x)}}}{{{1/x}}}
both combined rate {{{cross(1/20+1/x)}}}{{{1/40+1/x}}}



Filling The ONE Order {{{(1/40)15+(1/40+1/x)15=1}}};
Solve the equation for x.