Question

The 5th grade question

A roller coaster has 3 trains with 8 rows per train. Riders stand in rows of 4, for a total of 32 rider per train. The operators of the coaster recorded the number of riders on each train during a run. On the first train, the operators reported that 7 1/4 rows were filled. On the second train, all 8 rows were filled, and on the third train, 5 1/2 rows were filled. How many rows were empty on the third train? How many additional riders would it take to fill the empty rows? Explain your answer.

Answer 1

I need help.

Answer 2

2 1/2 rows were empty.

10 people would be needed to fill the empty rows.

If 5 1/2 rows were filled, 8 (amount of total rows) minus 5 1/2 = 2 1/2.

If there are 4 people per row, 2 x 4 = 8

1/2 x 4 = 2

8 + 2 = 10