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04 May 2022, 08:45
Kudos
Bookmarks
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
85%
(hard)
Question Stats:
55% (03:42) correct
45%
(03:11)
wrong
based on 80
sessions
History
Date
Time
Result
Not Attempted Yet
Alex has 75 red tokens and 75 blue tokens. There is a booth where Alex can give two red tokens and receive in return a silver token and a blue token, and another booth where Alex can give three blue tokens and receive in return a silver token and a red token. Alex continues to exchange tokens until no more exchanges are possible. How many silver tokens will Alex have at the end?
(A) 62
(B) 82
(C) 83
(D) 102
(E) 103
Are You Up For the Challenge: 700 Level Questions
(A) 62
(B) 82
(C) 83
(D) 102
(E) 103
Are You Up For the Challenge: 700 Level Questions
04 May 2022, 12:41
Kudos
Bookmarks
Start with the red tokens
R 37 trades= 1R,37S,112B
B 37 ". = 38, 74, 1
R 19 ". = 0, 93, 20
B 6 ". = 6,99,2
R 3 ". = 0,102,5
B 1". = 1,103,2
1 Red and 2 Blues left no longer meets minimum trade amounts, so 103 Silver
Posted from my mobile device
R 37 trades= 1R,37S,112B
B 37 ". = 38, 74, 1
R 19 ". = 0, 93, 20
B 6 ". = 6,99,2
R 3 ". = 0,102,5
B 1". = 1,103,2
1 Red and 2 Blues left no longer meets minimum trade amounts, so 103 Silver
Posted from my mobile device
18 Mar 2025, 13:48
Kudos
Bookmarks
| R | B | S | |
| start | 75 | 75 | 0 |
| step 1 | -74 | +37 | +37 |
| 1 | 112 | 37 | |
| step 2 | +37 | -111 | +37 |
| 38 | 1 | 74 | |
| step 3 | -38 | +19 | +19 |
| 0 | 20 | 93 | |
| step 4 | +6 | -18 | +6 |
| 6 | 2 | 99 | |
| step 5 | -6 | +3 | +3 |
| 0 | 5 | 102 | |
| step 6 | +1 | -3 | +1 |
| 1 | 2 | 103 |
