Question

a can do 1/3 of a in 5 days and b c an do 2/3of work is 10 in how many days both a and b together can do the whole work​

Answer 1

1/3a=5d   a=15     2/3b=10d   b=15

a                      b

15                     15

             15lcm(total work)

1                          1

so answer is 15/2