The number of students at a high school was decreased by 30% to 420 after the senior students graduated how many students were at the high school before the decrease

Step-by-step explanation:

s(1-30/100)=420

s(100-30)/100=420

s(70/100)=420

s(7/10)=420

7s=4200

s=600

Given that the dimensions of the rectangle are 50 yards by 35 yards length. the scale used to construct the model of the rectangle was as follows;
given that 10 inches represents 35 yards, then the scale will be:
10: 35
=1: 3.5
we can therefore conclude that:
1 inch represents 3.5 yards