Wipro
Company
Numerical Ability
Ratio and Proportion
A man can complete a job in 12 days, wife will complete in 15 days, how many days, working together
(a) 6 2/3 (b) 6 1/3 (c) 10 1/3 (d) 10 2/3
Read Solution (Total 6)
-
- MAN : 1/12
WIF : 1/15
MAN + WIFE : 1/12 + 1/15 =3/20,,,. ie 20/3
20/3 means 6 2/3
so ans: 6 2/3 - 11 years agoHelpfull: Yes(11) No(0)
- ANS:(a)
man's one day work=1/12
wife's one day work=1/15
both=(1/12)+(1/15)=9/60
reciprocal of work is days
so 60/9=6 2/3 days. - 11 years agoHelpfull: Yes(1) No(0)
- One day job for a men=1/12
one day job for a wife=1/15
so together they can=1/12+1/15=27/180=3/20
so working together=20/3=6 2/3 - 11 years agoHelpfull: Yes(1) No(0)
- SOLVING BY UNITARY METHOD :
TOTAL UNITS OF WORK TO BE COMPLETED IS L.C.M OF 12 AND 15 THAT IS 60 UNITS
MAN COMPLETES 60/12 = 5 UNITS/DAY
WIFE COMPLETES 60/15 = 4 UNITS/DAY
TOGETHER IN 1 DAY THEY COMPLETE 9 UNITS/DAY
SO NUMBER OF DAYS IN WHICH WORK IS COMPLETED IS 60/9 = 6 2/3 - 11 years agoHelpfull: Yes(0) No(0)
- a)6 2/3
man 1 day work 1/12,wife 1 day work 1/15.
Together (1/12 + 1/15)= 3/20 ( 1 day work ).
to get total days invert it 20/3= 6 2/3. - 10 years agoHelpfull: Yes(0) No(0)
- a is answer 1/12+1/15=3/20
so in 20/3 days they will complete the work - 7 years agoHelpfull: Yes(0) No(0)
Wipro Other Question