Question

25. Make Sense and Persevere A high school

track team's long jump record is 21 feet
2 and 1 over 4 inches. This year, Tim's best long jump is
20 feet 9 and 1 over 2 inches. If long jumps are measured to
the nearest quarter inch, how much farther must
Tim jump to break the record?

Answer 1

5 in

Explanation:

20 ft-9
`(1)/(2)` in+ 2
`(1)/(2)` in = 21 ft meaning, Tim has to jump 2
`(1)/(2)` in more inches just to get to 21 ft, then...

He needs to jump an additional 2
`(1)/(4)` +
`(1)/(4)` = 2
`(2)/(4)` = 2
`(1)/(2)` in to break the record. Note: he needs to jump at least
`(1)/(4)` in farther than the record because jumps only are measured to the nearest
`(1)/(4)` inch.

Therefore Tim must jump 2
`(1)/(2)` in + 2
`(1)/(2)` in = 5 in farther to break the record.