1 m^3 = 3.28 ft x 3.28 ft x 3,28 ft = 35.288 ft^3
$10 = 10 x 100=1000 cents
To double his money:
1000 cents/ 35.288 ft^3 x 2 = ~~ 57 cents/ft^3
If admission price is REDUCED by $25/person if the group is fifteen or more:
$500 / $25/person = 20 people would 'save' $500 over the original admission price.
See bottom line:
Multiply your first equation by -3 to get
-45x-36y = -877.50 the add it to the second equation to get
-26y=-130 solve for y =$ 5
Sub y= 5 in to either equation
15x +12(5) = 292.5
15x= 232.5
x= $15.5
@ 'regular price' of $40/person she can take (including herself in the count)
$300/$40/person = 7.5 ~ ~~ 7 people with $20 leftover
@ 'specil rate' she can take ($300-150)/ $25/person = 6 people
You're answers look good to me.
the second question: Boxes 1 and 2 are true
There are 32 socks total (16 pairs) 8 socks are black
8/32 chance of getting a black sock
that leaves 31 socks of which 4 are green
4/31 chance of getting a green sock on your second pick
8/32 * 4/31 = 32/992 = 1/31
ALICE stands for alert, lockdown, inform, counter and evacuate.
I would go with that !
Cool! You DO use the second '5' ...but it is idistiguishable from the other....so the numbers would look the same....so you must divide by two....
