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Answer

10c : 20c
1 : 7
3 : 6
5 : 5
7 : 4
9 : 3
11 : 2
13 : 1
15 : 0

Ans : 8 ways.

0 Replies 2 Likes ✔Accepted Answer

First way → 1× 10¢, 7× 20¢

Next, exchange 1 20¢ coin for 2 10¢ coins. Repeat until you have all 10¢ coins.

Since there are 7 20¢ coins, you can make 7 exchanges until you have all 10¢ coins.

Total → 8 ways

0 Replies 3 Likes
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