SOLUTION: A child has 40 coins worth more than $6.00. If the coins are dimes and quarters only, what can you conclude about the number of quarters?

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Question 358695: A child has 40 coins worth more than $6.00. If the coins are dimes and quarters only, what can you conclude about the number of quarters?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.D%2BQ=40
2.10D%2B25Q%3E600
From eq. 1,
D=40-Q
Substitute into eq. 2,
10%2840-Q%29%2B25Q%3E600
400-10Q%2B25Q%3E600
15Q%3E200
Q%3E13.3
There are at least 14 quarters in the collection.