in a school of 105 pupils,the girls are 25 more than the boys. how many boys are there in the school?​

40

Step-by-step explanation:

Girls=(25+b)

boys=b

girls + boys=105

(25+b)+b=105

2b=80

b=40

Check answer

girls=b+25

girls=40+25

girls=65

boys+girls=105

40+65=105

105=105

Step-by-step explanation:

A recipe uses 3 cups of flour and 2 cups of sugar.

The ratio is the relation between two quantities of the same kind.

For example:

There are 10 boys and 9 girls in a class. The ratio of boys to girls is 10 : 9

We can write the ratio in fraction form : and also we can simplify the ratio.

Now let's move to our question.

The ratio of 3 cups of flour and 2 cups of sugar is 3:2

This can be written as