you ask 70 of your classmates if they have any siblings complete the two way frequently table to shows the results of the survey

you ask 70 of your classmates if they have any siblings complete the two way frequently table to shows the results of the survey
I will answer in the attached image
Please see the attached image
Please wait a minute
step 1
Find the value of 25
40-15=25
step 2
Find the value of 45
20+25=45
step 3
Find the value of 10
25-15=10
step 4
Find the value of 30
20+10=30
step 5
Find the value of 70
25+45=70
and
40+30=70