Answer
See the picture.
Work Step by Step
Cumulative frequency for "775-799" is $22$
Cumulative frequency for "800-824" is $22+68=90$
Cumulative frequency for "825-849" is $22+68+15=105$
Cumulative frequency for "850-874" is $22+68+15+5=110$
Cumulative frequency for "875-899" is $22+68+15+5+0=110$
Cumulative frequency for "900-924" is $22+68+15+5+0+0=110$
Cumulative frequency for "925-949" is $22+68+15+5+0+0+0=110$
Cumulative frequency for "950-974" is $22+68+15+5+0+0+0+1=111$
