A can do 1/2 of a piece of work as B and C does 1/2 as mch work as A and B together.If C alone can finish the work in 40 days,then together all will finish the work in-
a)30 days
b)13+1/3days
c)15 days
d)20 days
The person who can solve mathematical problems,can lead life easily ,Maths tellu that every problem as solution...we can find number of solutions for one problem ...Aplly it in the life also we can lead our life happily...