ElectricPavlov

16 - 4 * x  >10   Subtract 16 from both sides of the equation

-4 x > -6            Multiply both sides by -1    NOTE:     >   reverses when you do this !

4x < 6              Divide by 4

x  <  6/4 

x < 1  1/2        Only ONE positive integer will satisfy this   x = 1

We found from Chris' previous answer that girl vs girl  (or boy vs boy) is 10 games

Total games would be   10C2 = 45

10/45 = 2/9

As we found in one of your previous postings    L:M:N   is 3:6:8  

3+6+8 =17     Not between 30 and 50    so let's double them all (this will keep the same ratios

L:M:N  6:12:16      6+12+16 = 34    satisfies the requirements

L=6

M=12

N=16

Need to find h    the height of the pyramid....then volume = lwh/3

the diagonal of the base (using Pythag Theorem)    sqrt(6^2 + 8^2)  = 10

    now the mid point of the diagonal  and h   form another right triangle with hypotenuse 13 (given)

        so use pythag theorem again to find h       h^2 + 5^2 = 13^2     yields  h = 12

Volume = lwh/3  = (6)(8)(12)/3 = 192 units^3

2000000 cp / $50 

1004011999 cp / ( 2000000cp/$50)  = $ a lot  = $ 25100.30 

He starts week 1 with 40      each week he has 24.5 in obligations and is left with 15.5

each subsequent week   adds 35 and subtracts 24.5   for  a net of 10.5 increase at the end of the week

Week 2 end he will have 26

week 3 end  he will have 36.5      still not enough to buy $50 CD set

Week 4 end he will have 47          Getting close!

Week 5 end he will have 57.5      Made it !    At the beginning of week 5 he can buy his CD set and still cover his expenses for the rest of the week !

He will hve received 5    $35 allowances

This too was answered in your previous post     l/n = 3/8