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Educational materials for IPMAT and IIMB UG preparation
8 years, 10 months ago
8 years, 10 months ago
let the number of painters be n
so dabblers=10-n
10 painters can complete in 5 days. so 1 painter can complete the 1/50 th of work in 1 day
since dabblers efficiency is half 1 dabbler can do 1/100 of work in 1 day
therefore (n/50)+((10-n)/100)=(1/6.xx)
n can either 5 or 6.
let the amount of paint used by dabbler is x. so amount of paint used by painter is 0..75*x
now if n=6
dabblers=4
4*x-6*x*0.75=5
x is negative so n<>6
if n=5
5*x-5*x*0.75=5
x=4
total paint=35 liitres
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