Question

X can do 1/4 of a work in 10 days,Y can do 40% of the work in 15 days and Z can do 1/3 of the work in 13 days. Who will complete the work first ?

Answer 1

Y will complete fast because he has mor wfficiency

Answer 2

x work in 1 day = 1/40
y work in 1 day = 2/75 = 1/(75/2)) = 1/37.5
z work in 1 day = 1/39

SO IT'S Y