210 balloons are filled for a reception this is 70% of the entire number balloons purchased which equation can be used to find the total number of balloons purchased

300 balloons.

Step-by-step explanation:

Given:

210 balloons are filled for a reception this is 70% of the entire number balloons purchased.

Question asked:

Which equation can be used to find the total number of balloons purchased ?

Solution:

Let total number of balloons purchased =

70% of the number of balloons purchased  = 210

Therefore, total number balloons purchased was 300.

300 balloons.

Step-by-step explanation:

210 balloons are filled for a reception this is 70% of the entire number balloons purchased

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