Answer:
EA = 
Step-by-step explanation:
Δ CEA and Δ CDB are similar by the AA postulate. Then the ratios of corresponding sides are in proportion , that is
=
( substitute values )
=
=
( cross- multiply )
9 EA = 150 ( divide both sides by 9 )
EA =
= 
We know the workers can unpack 48 books in 2 minutes, so how many minutes for 200?
<span>A common factor is a factor of 2 or more numbers.
the factors of 12 are: 1,2,3,4,6,12
the factors of 21 are: 1,3,7,21
1 and 3 are both common factors of 12 and 21.</span>