CPhill

Let's approach it from the other direction

i = A/P   - 1           notice that  "1" can be written as P/P

So we have

i = A/P  - P/P         and since we have a common denominator, we can just write this all over that denominator...so we have....

i =  [ A - P ] / P        which is exactly the same as the other expression

To find this angle, use the tangent inverse

tan^-1(.9540) = about 43.65°

This could also be an angle in the 3rd quadrant  = [180 + 43.65]° = 223.65°

1360 : 768   =   { divide each by 8 }

170 : 96  =  (divde each by 2}

85 : 48

I assume we have

y-3/5= 8+ 1/6 

y - 3/5  = 49/6    add 3/5 to both sides

y = 49/6 + 3/5    

y = [245 + 18] / 30

y = 263/30

(3/5-1/20)*(2/3+4/5+8/15)

Simplify the terms in the first set of parentheses

3/5 - 1/20  =   12/20 -  1  /20   = 11/20

Simplify the terms in the second set of parentheses

2/3 + 4/5 + 8/15 =   10/15 + 12/15 + 8/15  =  (30/15) = 2

So

(11/20) * (2)  =

22/20  =

11/10

There is no solution to this.......see why....

7(x - 3)  = 7x - 14

7x - 21 = 7x - 14     subtract 7x from both sides

-21 = -14      and this is impossible

So......no solution....

1/6 of 60 = 10 minutes

1/4 of 60 = 15 minutes

So

10 + 15 = 25 minutes

And

60 - 25 =  35 minutes that they worked together

1 foot  = 2 in

So

10 ft. =  20 inches high

You would still have 10....they would just be in different places, now...