Question

200 students were asked to name their favorite science class. The results are shown in the two-wayfrequency table. Use the table to answer the following question.

Answer 1

Step-by-step explanation:

We're told from the question that 200 students took part in the exercise, so if the total number of girls is 100 then the total number of boys will be;

`\text{Total number of boys =}200-100=100`
`\text{Total number of boys that chose Biology}=100-44-37=19`
`\text{Total number of boys and girls that chose Biology}=40+19=59`
`\text{Total number of boys and girls that chose Chemistry}=39+44=83`
`\text{Total number of boys and girls that chose Physics}=21+37=58`
`\text{Total of the total row}=59+83+58=200`

To find how many more girls than boys chose Biology, we'll have;

`40-19=21`

So 21 more girls than boys chose Biology.