Dec 13, 2019

### Click here for the Wednesday Dec 11 sprint 18081.

##### Problem 1:

The top three steps of a stairway are shown.
The stairway has 61 steps with 61 risers
that are each 4 cm high. The 78 treads are
each 10 cm wide. If all the stairs were
shown in the figure, what would be the area
of the figure?

##### Problem 2:

The seats in a theater are set in 32 rows in
such a way that each row after the first has
8 more seats than the previous row. If the
first row has 25 seats, how many seats are
in the theater?

##### Problem 3:

What is the single discount that is
equivalent to the two successive discounts
of 29% off followed by 28% off the
discounted_price? Answer to the nearest
hundredth of a percent.

##### Problem 4:

The seats in a theater are set in 28 rows in
such a way that each row after the first has
4 more seats than the previous row. If the
first row has 28 seats, how many seats are
in the 26th row?