Lesson Word Problems by Two Equations Two Unknowns by Rapalje

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4.08 Applications of Systems of Equations

P. 369-378

Dr. Robert J. Rapalje

Seminole State College of Florida

ANSWERS TO ALL EXERCISES ARE INCLUDED AT THE END OF THIS PAGE

ANSWERS 4.08

p. 370 - 378:

            1. 21, 3;   2. 72, 48;   3. 81, 162;   4. 13, 35;   5. -4, 22;   6. 22, 28;   7. 32, 16;   8. 26, 22;

              9. Hamburg $2, Hot dog $1; 10. Sm $4, Lg $10; 11. Cereal $3, Peanut butter $2;

            12. Child 20, Adult 80;   13. 12Q, 8D;   14. 7Q, 28N;   15. 20Q, 23D;   16. 70D, 67P;

            17. $800 @ 8%, $200 @ 6%;     18.   $3000 @ 12%, $7000 @ 10%;

19. $3500 @ 5%, $6500 @ 12%;     20.   40 pigs, 20 chickens.

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