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vanessajimenez361
10.11.2019 •
Mathematics
Will give brainliest if right and worth 75 points
the environmental club is holding round two of the clean-up competition. in this round, two-person teams are assigned to areas of land that are scattered with litter. the winner is the team that cleans up its area in the fastest time possible.
team 1: tammy could clean one-half of her area in one hour when she worked alone. her teammate, melissa, could clean one-third of her area in one hour when she worked alone.
team 2: santay could clean one-quarter of his area in an hour when he worked alone. leticia could clean four-fifths of her area in an hour when she worked alone.
find the rate that team one cleaned together (as in time)
find the rate that team two cleaned together
which team was the fastest
explain how you solved.
Solved
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Ответ:
r= -1/4
Step-by-step explanation:
to solve this, you would need to cross multiply, so:
10(r+1)=2(r+4)
then, you would have to use the distributive property to simplify each side of the equation:
10r+10= 2r+8
now, subtract 8 from both sides to isolate the variable on one side:
10r+2=2r
Now, subtract 10r from both sides to combine like terms:
2= -8r
now divide by -8 on both side, and simplify:
-2/8=r
-1/4=r
so, r= -1/4
hope this helped :D im sorry if its hard to understand T.T