The ratio of girls to boys who participated in the quiz bowl was 7:5 . There were 42 girls in the competition. How many bous participated?

Which fraction below is equivalent to 10/12?

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?