Which equation describes this statement?

the sum of a and b is equal to 33.

let b = 11.

a.

a × 11 = 33

b.

a + 11 = 33

c.

a – 11 = 33

d.

a ÷ 11 = 33

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28