2. If some guys spends m $ to buy d doughnuts how many doughnuts can he buy if he spends m+2 $
208507
1) assuming it's inversely proportional then you have multiplied by m+2/m so it's dm/(m+2)\n2)(m+2)d/m
115094
multiply together the number of different possible combinations.  As the guy above me said, there are four times of toppings times the number of cheese choices times the weight of meat times the bun choices times anything else you can think of.
349015
6 pennies.\n3 dimes.\n8 nickles.\n\nLearn how to do your own homework :-P
154710
I'm trying 2 figure out how 2 chick this question.
159182
I love this riddle, haven't seen it a while... quite simple :) okay its takes a while: $25 to hotel, $2 for bellboy in transit, $3 returned to the GUYS = $30. Each guy DID spend $27, plus the $2 bellman pocketed (tricky part is do not add but SUBTRACT!) they had no idea they're supposed to spend $25! should've stayed home, lol
425327
1     $58.50\n\n2     $23.20\n\n3     $38.25\n\n4     $75.60
132162
The cost of 7 hamburgers and 3 slices of pizza would be\n20 - 1 = $19\nThe cost of 8 burgers and 2 slices of pizza would be\n20 - 0.5 = $19.50\nLet x = cost of a burger and y = cost of a slice of pizza\nThe first statement implies\n7x + 3y = 19\nThe second statement implies\n8x + 2y = 19.50\nNow solve these two equations either using substitution of elimination.\nAfter you solve for x and y, you will see that\nx = 2.05 for one burger and y = 1.55 for one slice of pizza\nThus, the cost of 5 burgers and 3 slices would be\n5(2.05) + 3(1.55) = $14.90\nYou paid with a $20, so the change would be\n20 - 14.90 = $5.10
183564
that he has charged them $5 extra\nHe sends this 5 through a waiter\nthe waiter doesnt know how to distribute $5 among 3 persons\nHe pockets $2 and gives them $1 each\n\nNow each had to pay $9\nThe waiter got $2\nTotal $29\nWhere did $1 go\n\nRight?\nMy chocolate please!!
439200
Tom baked 4 batches of fairy cakes. Each batch consisted of x cakes. He put 3 cherries on top of each cake in the first batch, but couldn't resist taking off and eating 5 of them. He did the same again with the second batch, then the third, then the fourth! Meanwhile, Sarah baked 5 batches of fairy cakes, again with x cakes in each batch. She put 2 cherries on each cake and an extra two on the final one. She repeated this procedure with each of the batches. She managed to resist eating any at all! Tom and Sarah discovered that Tom's cakes had exactly the same number of cherries in total as Sarah's. Set up an equation for this.\n\nThen: \n\nNumber of cherries on Tom's cakes = 4(3x-5)\nNumber of cherries on Sarah's cakes=5(2x+4)\n\nBut number of cherries is equal so:\n\n4(3x-5)=5(2x+4)\n\nPhew!! I think that works!! Lol!
126545
x = kg of cashews\ny = kg of pecans\n\nThe bag is 10kg, so x + y = 10.\nThe total cost of the bag is $84.00, so 8x + 9y = 84.\nBut you know x = 10-y from equation 1, above.  Make that substitution into equation 2.\n\nNow:\n8(10-y) + 9y = 84.\n80 - 8y + 9y = 84\n80 + y = 84\ny = 4\n\nSince x + y = 10, x must be 6.\n\nCheck:\n6 * $8.00 + 4 * $9.00 =\n48.00 + 36.00 =\n$84.00\nCorrect.
71367
the trick to this question was in the wording and how the math was worked out in error\nthe  $3 they got back is what needs to be added to $72... NOT the $2 the waiter kept \nsince they got that back that is what you add... since the waiter kept $2, it is already included in what they paid
108537
40 pennies, 8 nickels, 2 dimes  \n\nor\n\n45 pennies, 1 quarter, 2 dimes, 2 nickels
38297
It's a win-win situation for me. If I give the person $2, he'll give me $3. But, if I keep my $2, he'll give, me $1. So I get $3 dollars either way.
70246
There is no missing dollar. You calculations are deceptive. The manager has his 25, the guys each have one and the bellhop has 2. 25+1+1+1+2=30\nAdide from that the guys haven't paid $9 each, they just think they did. They really paid less, they just didn't get all they deserved back, so in their minds they paid 9 and the manager has the other 3\nSo I'm going to assume the whole point of the (3x9)+2 is to cause confusion and the answer is that is irrelavent because they didnt pay 9 each.
246193
Ok so let's try this:\n\nGuy 1, Guy 2, Guy 3 each pay $15 so:\nGuy 1 = $15\nGuy 2 = $15\nGuy 3 = $15\n\nManager says "$5 too much" and sends the change back ($5) but neither 40 nor 5 divides by 3 into a integer so with an honest waitress the money situation could go like this:\n\nGuy 1 gets back $1, Guy 2 gets back $2, Guy 3 gets $2 and all three get an explanation that $5 doesn't split evenly, sorry. So prior to our waitress taking the $2 you have:\n\nGuy 1 = $15 - $1 = $14\nGuy 2 = $15 - $2 = $13\nGuy 3 = $15 - $2 = $13\ntherefore: $14 + $13 + $13 = $40\n\nOur waitress reasons that our guys want to have spent the same amount of money so she takes a $ each from Guy 2 and Guy 3 to even it out and she takes an extra dollar otherwise she gives back Guy 1 his whole $15 back and Guys 2 and 3 are upset:\n\nGuy 1 = $14\nGuy 2 = $13 + $1 = $14\nGuy 3 = $13 + $1 = $14\ntherefore all three guys have paid $14 each = 3 x $14 = $42\nShe keeps the extra $1 to keep it fair (all guys paid $14)
384384
1.  Start from the beginning.  15X2 and so on\n15\n30\n60\n120\n240\n\n\n\nthe answer is 240$ man are things overpriced.\n\n2.Not enough information....
135184
because the analogy at the end is incorrect. the 2 dollars that the waitress had is part of the 27 dollars that the guys paid. if you look at it from a different  and correct perspective, the guys paid $27 each and kept 3. Or, now the waitress has 27 dollars thand the guys have three