If 24 electricians can wire some new houses in 15 days, how many electricians would be required to do the job in 12 days?.

here,

electrician/days

24 - 15

x(let). -12

direct proportion,

then,

exchange X up 24 down

or,24*15=12*X

or,24*15divided by 12=X

X=30

hence,30 electrician required to do complete in 12 days

-100

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