A and b can do a pieces of work in 12 days. B and c in 15 days. c and a in 20 days. how many times will a along take to finish the work.
Answers
Answered by
3
a and b 1 day work =1/12
b and c 1 day work =1/15
c and a 1 day work=1/20
now add up all 3 which will give all the work of 1 day
now add up any 2 eqation where 1 letter is common and then substract the (add up) eqation which will give 1 day work of that alphabet and divide it by 1
Similar questions