ElectricPavlov

First pass place 7 bags    each subsequent pass places 6 bags

2021 - 7 = 2014

2014 / 6 = 2014/6 = 335 passes   then   4  bags are left over   

First pass goes from 7 to 1  ( this is the first pass of '6' after the initial 7)

   335th pass goes from 7 to 1

        then 4 more bags   go to boxes     2 3 4 5         I think.

        15     27     51

62 %   increase

5 p + 3 m   = 90 + 3 p + 5 m

2 p - 2 m = 90

p - m = 45 cents

pen costs 45 cents mor than marker

t = r + 28

 y = r-46

r

r + 28       +   r-46       +  r    =   228

r = 82         t  = 110        ryan = 36

tan 60  =  opp/ 1     opp = left side = 1.732

Dashed line        = adj / hyp   = cos 60

                                1/ cos 60 = 2 = dashed line              

Then the L upper angle in the larger triangle is 60 degrees      cos 60 = 2/x      then  x = 4

2 * 105   +   2 * 120   +  2 * alpha = 720

alpha = 135 degrees

larger circle - smaller circle   =   8 * smaller circle      area

pi L²   -    pi S^{2              =}    8 pi  S²  

L^2 - S^2  = 8 S^2

L^2 = 9 S^2  

S/L = 1/3

Area =   (12+10) /2  X  10 = 110 cm^2

each cm^2 = 4 mi^2            110cm^2 * 4 mi²/cm2     * 640 acres/mi²  =281600 acres     (edited)

x = 8% grams   

500 -x = 6% grams

.08 ( x)     +    .06 ( 500-x)  =  .0752 (500)

.08x         +   30 - .06x   = 37.6

x = 380  gm    of 8%       120 gm of 6%