Use the table to answer the question.

Question

Studying Online

Girls Boys Row total

Want the option to keep studying online 10 3 13
Don’t want the option to keep studying online 5 7 12
Column total 15 10 25

Which mathematical sentence can be used to calculate the probability of selecting a student who wants the option to keep studying online or is a boy?

Answer 1

P(wants online option or is a boy) = (number of girls who want online option + number of boys) / total number of students = (10+3)/25 = 0.52

Answer 2

3/25
Start Fraction 3 over 25 End Fraction

13/25+10/25
, Start Fraction 13 over 25 End Fraction plus Start Fraction 10 over 25 End Fraction

13/25×10/25
, Start Fraction 13 over 25 End Fraction times Start Fraction 10 over 25 End Fraction

13/25+10/25−3/25

Answer 3

, Start Fraction 13 over 25 End Fraction plus Start Fraction 10 over 25 End Fraction minus Start Fraction 3 over 25 End Fraction

Answer 4

what percent?

Answer 5

To convert a fraction to a percent, you can multiply it by 100 and add the % symbol.

3/25 as a percent is:

3/25 × 100% = 12%

So, 3/25 is equivalent to 12%.

Answer 6

The answer is 52%