10 apples = 1cents

5 oranges = 2cents

2 pear = 5cents

Using at least 1 of each, get 100 fruits and 1 dollar. WITHOUT GUESSING.

Results 1 to 5 of 5

- Sep 29th 2011, 04:00 PM #1

- Joined
- Sep 2011
- Posts
- 5

- Sep 29th 2011, 06:03 PM #2

- Sep 29th 2011, 07:05 PM #3

- Joined
- Sep 2011
- Posts
- 5

- Sep 29th 2011, 07:07 PM #4

- Sep 29th 2011, 08:32 PM #5

- Joined
- May 2006
- From
- Lexington, MA (USA)
- Posts
- 12,028
- Thanks
- 847

## Re: Odd question

Hello, pvpkillerx!

Using at least one of each, get 100 fruits and 1 dollar ... without guessing.

Let: .

There are 100 fruits: .

They cost 100 cents: .

Multiply [2] by 10: .

. . . . Subtract [1]: .

. . . . And we have: . . .

. .

Since is an integer, must be divisible by 8.

. . Hence: .

Substitute into [1] and solve for A.