There was a total of 41 pupils in a class. Each girl made 35 bookmarks while each boy made 20 bookmarks for a fundraising project. The total number of bookmarks made by all the pupils was 1165. How many girls were there in the class?

Guest Oct 5, 2021

#1**0 **

Supposed there were 41 boys in the class,

41 × 20 = 820

(short of) 1165 - 820 = 345

(difference) 35 - 20 = 15

No. of girls in the class

= 345 ÷ 15

= 23

23 girls were in the class.

Guest Oct 5, 2021

#2**0 **

There was a total of 41 pupils in a class. Each girl made 35 bookmarks while each boy made 20 bookmarks for a fundraising project. The total number of bookmarks made by all the pupils was 1165. How many girls were there in the class?

Let G represent the number of girls

Let B represent the number of boys

G + B = 41 (equation 1)

35G + 20B = 1165 (equation 2)

Multiply eq 1 by 20 20G + 20B = 820 (equation 3)

Subtract eq 3 from eq 2 35G + 20B = 1165

20G + 20B = 820

15G = 345

G = **23 girls**

You can substitute 23 into equation 1 to find the number of boys,

but the problem didn't ask for the number of boys.

Guest Oct 5, 2021