To complete a train track, 66 wood ties are needed at one end, and 129 wood ties are needed at the other end. the track builders want to have a few extra ties in case any split or have knots in them. they put in an order for enough ties to finish the train track.

which statement is correct?

a.
the builders should order the exact number of ties they need which is 66 and 129.

b.
the builders should estimate that they need 70 + 130 ties and order 200 ties.

c.
the builders should estimate that they need 60 + 130 ties and order 190 ties.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

what statement? is there an image?