SOLUTION: 1. The teacher put sets of paints into different-sized boxes. She labeled the boxes to show how many sets were in each one. The boxes were labeled 32, 15, 17, 16, 19 and 21. The te

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: 1. The teacher put sets of paints into different-sized boxes. She labeled the boxes to show how many sets were in each one. The boxes were labeled 32, 15, 17, 16, 19 and 21. The te      Log On


   

Question 234703: 1. The teacher put sets of paints into different-sized boxes. She labeled the boxes to show how many sets were in each one. The boxes were labeled 32, 15, 17, 16, 19 and 21. The teacher needed 50 sets of paints. Which three boxes should she choose?
PLEASE ANSWER THE QUESTIONS BECAUSE I DONT GET IT THANK YOU VERY MUCH!!!!
Answer by solver91311(24713) About Me  (Show Source):
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Don't type in ALL CAPS. It is the text communications equivalent of shouting and is both annoying and rude.

Pick the largest and the smallest number: 32 and 15. 32 + 15 = 47. You don't have a 3 to choose from, so the 32 is not one of your choices.

try 15 + 17. That is 32. 50 minus 32 is 18. You don't have an 18 in the list, so we know the 15 doesn't go with the 17.

try 15 + 16. That is 31. 50 minus 31 is 19. There is a 19 in the list. There you go. 15 + 16 + 19 = 50.

John