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3 years ago

9

In a group of 100 people, 70 have a DVD player, 60 have a CD

1 answer:

erma4kov [3.2K]3 years ago

5 0

Answer:

50 people

Step-by-step explanation:

100-70 is 30. 30-20 is 10. 60-10 is 50.

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navik [9.2K]

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Step-by-step explanation:

$Blue=144units^2$ This also works as the height of the triangle.

$Pink=1225units^2$ This also works as the base of the triangle.

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So we have a triangle with a base of 35 units and a height of 12 units.

Now let's use the pythagoream's theorem to solve.

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Keith_Richards [23]

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