Question 974295
t takes ted 11 hours to paint a building. It takes Linda 8 hours to paint the same building which if the following equations could be used to determine how many hours it would take them to paint the building if they worked together? 
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let x time it takes Ted and Linda to paint the same building  if they worked together
1/11=Ted's work rate
1/8=Linda's work rate
1/x=work rate working together
sum of individual work rates =work rates working together
{{{1/11+1/8=1/x}}}
{{{8/88+11/88=1/x}}}
19/88=1/x
x=88/19≈4.63
How many hours it would take them to paint the building if they worked together? 4.63