Jacob is watching a track meet. When he turns to look, Runner A is 6 meters ahead of Runner B. If Runner A is running at 3 meters per second and Runner B is running at 4 meters per second, how many seconds will it take Runner B to catch up to Runner A?

6seconds

Step-by-step explanation:

calculate relative speed (4-3=1) because they are moving in the same direction, T=distance/relative speed=6/1

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500