Six of the painters paint 90 m of fence in five hours.
For how long would the 4 painters paint a 45 meter fence?
How many meters fence painted painters 5 for two hours?

Correct result:

a =  3.75 d
b =  30 m


x=90/6/5=3 a=45/(4 x)=45/(4 3)=154=154 d=3.75 d
b=x 5 2=3 5 2=30 m

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