Mathematics, 28.11.2019 07:31 nscarlisleh13

Melinda and paula shovel driveways and sidewalks in the winter as a way to earn extra money. together they shoveled 450 square feet of sidewalk in 30 minutes. then melinda shoveled for 20 minutes while paula shoveled for 25 minutes to complete 345 square feet of driveway.

30x + 30y = 450

20x + 25y = 345

how much more can paula shovel in 1 minute than melinda?

3 square feet per minute

6 square feet per minute

9 square feet per minute

15 square feet per minute

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Melinda and paula shovel driveways and sidewalks in the winter as a way to earn extra money. togethe...

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