The sum of two numbers is 9. The difference of the same two numbers is 15. What are the numbers?

Tickets for a touring production of CATS cost $ 90 for the orchestra seats and $50 for balcony seats. You purchase 12 tickets, some in the orchestra and some in the balcony, for total cost of $

920. How many orchestra and how many balcony tickets did you purchase?

A chemist needs to mix a solution that is 26% ammonia with a solution that is 10% ammonia to obtain 400 ml. of a mixture that is 15% ammonia. How many ml. of each solution must be used?

When a plane flies with the wind it can travel 4200 miles in 6 hours. When the plane flies in the opposite direction, against the wind, it take 7 hours. Find the rate of the plane and rate of the wind.

Subject | Mathematics |

Due By (Pacific Time) | 05/01/2013 02:00 am |

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