Respuesta :
We can write a ratio equation 90/100 =18/x to show how many problems he got right on his science test.
We can cross multiply to simplify our equation to 90x=1800.
Now we divide by 90 on both sides to get x=20.
There were 20 questions on the science test, if you answered 18 questions correct, your test score would be a 90%.
We can cross multiply to simplify our equation to 90x=1800.
Now we divide by 90 on both sides to get x=20.
There were 20 questions on the science test, if you answered 18 questions correct, your test score would be a 90%.
