<span>Given the proportion a/b = c/d, the extremes are a and d.
The means are b and c.
To remember this, think about the terms of the proportion as being in order:
a, b, c, d. On the ends are a and d and are the extremes. Between the extremes are the means, b and c.</span>
Check the picture below.
let's notice that the red triangle is a 30-60-90 triangle, and the green one is a 45-45-90 triangle.
Answer:
293 seconds
Step-by-step explanation:
60*4=240
240+53=293