SOLUTION: p&q can do a piece of work in 10 days, q&R in 12 days while p&R can do it in 12 days .in how many days p alone can do the work
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Question 815711: p&q can do a piece of work in 10 days, q&R in 12 days while p&R can do it in 12 days .in how many days p alone can do the work
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
p&q can do a piece of work in 10 days, q&R in 12 days
while p&R can do it in 12 days, in how many days p alone can do the work
:
let the completed job = 1
:
"p&q can do a piece of work in 10 days,"
+ = 1
:
q&R in 12 days
+ = 1
:
while p&R can do it in 12 days
+ = 1
:
in how many days p alone can do the work
we know that
+ = +
if we subtract 12/r from both sides
=
therefore: q = p
Replace q with p in the 1st equation
+ = 1
= 1
p = 20 days for p to do it alone
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