Question

3.

Answer 1

Ruby studied her science test for 1/2 of an hour

What is an equation?

An equation is an expression that shows the relationship between two or more variables and numbers.

Jamal spent 1 1/2 (1.5) hours studying for his science test ruby studied for 1/3 the amount of time that Jamal studied.

Amount of time ruby studied = (1/3) * (1.5) = 1/2 of an hour

Ruby studied for 1/2 of an hour

Find out more on equation at: brainly.com/question/1214333