The ratio of children to adults on a school trip is initially 10: 1. This
doesn't meet government
regulations, so 5 more children and
5 more adults join the trip so that
the ratio is now 9: 1. How many
children are there now?

the answer is d

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you estimate that the angle of elevation to the top of the 86th floor (the observatory) is 82 .the total height of the building is another 123 meters above the 86th floor.

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3. 8,935,200 minutes

4. 227,040 feet