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# Math Help is really appreciated?

1. How many liters of a 7% salt solution should be mixed with a 15% salt solution to produce 40 liters of a 12% solution?

2. Find three consecutive positive integers such that the product of the smallest and largest is one less than nine times the middle integer.

3. A car leaves Berlin traveling at 60mph. How long will it take a second car traveling at 90 mph to catch the first car if it leaves 2 hours later?

4. Cassandra deposits some money into a 7% annual simple interest CD. She makes a second deposit, 1500 less than the first, into a 9% annual simple interest mutual bond.The total interest she will earn after one year is $505. How much did she deposit in the CD?

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