(repost)
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.

Nthe opening scene of the movie raiders of the lost ark, indiana jones replaces a golden statue with a bag of sand. the platform on which the statue is placed is designed to detect the mass of the statue. if the bag of sand has a different mass than the statue, then a mechanism triggers and destruction ensues. the density of gold is about 20\text{ g/cm}^320 g/cm 3 20, space, g, slash, c, m, start superscript, 3, end superscript. the density of sand can be estimated at 2.5\text{ g/cm}^32.5 g/cm 3 2, point, 5, space, g, slash, c, m, start superscript, 3, end superscript. the gold statue can be modeled as a cylinder with height 25\text{ cm}25 cm25, space, c, m and radius 8\text{ cm}8 cm8, space, c, m. in terms of \piπpi, what is the mass of sand indiana jones needs to avoid triggering the mechanism?