Two airport shuttle trains leave the main station at the same time. shuttle a returns to the station every 8 minutes. shuttle b returns to the station every 10 minutes. in how many minutes will shuttles a and b leave the station together for the second time?

a. 10 minutes
b. 18 minutes
c. 40 minutes
d. 80 minutes

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