What are some verbal cues that indicate a ratio relationship

How many grams must be adde to 970g to make 1 and a half kg

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

Which of the following is correct interpretation of the expression -4+13