2. Cindy sells umbrellas in a shop. She can sell 10 umbrellas on a sunny day and 25 umbrellas on a rainy day. If Cindy sold 115 umbrellas last
week, write and solve a system of equations in order to find:
How many sunny days there were last week?
sunny days
How many rainy days there were last week
rainy days

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