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%
Answers
Answered by
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
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