Question

102. X can do 20% of a work in a day. Y can do 25% of the
same work in a day and X, Y and Z together can do 50%
of the same work in a day. How many per cent of work
can be done by Z in a day?
(a) 5%
(b) 7%
(c) 10%
(d) 13%​

Answer 1

Answer:

Z=5÷

Step-by-step explanation:

given :-x=20÷

y=25÷

z=?(to find)

hence,

x+y+z=xyz

20+25+z=50

45+z=50

z=50-45

z=5÷. ANSWER