Question

(a)

Answer 1

Answer:

620 is the number of boys in the school

Explanation:

1400 is the number of students in the school, since we know how many girls there are in the school then we can subtract the number of girls from how many total students are in the school. So you gotta subtract 780 from 1400 which is 620, the number of boys in the school.

BRAINLIEST ME PLSS:)

Answer 2

Answer:

(a) Percentage of girls = 55$\frac{5}{7}$

(b) Percentage of boys = 44$\frac{2}{7}$

Step-by-step explanation:

To find percentage, we multiply the fraction out of the total by 100%.

Percentage of girls = $\frac{780}{1400}$ × 100%

                                = 55$\frac{5}{7}$

Percentage of boys = $\frac{1400-780}{1400}$ × 100%

                                 = 44$\frac{2}{7}$