Two groups of robbers left the bank at the same time. One group of robbers drove 1 vans and 6 cars that traveled at a total of 372
kph. The second group drove 4 vans and 12 cars and traveled at a
total of 780 kph. Every van and every car drove the same speed.
What speed did the vanš drive at? What speed did the cars drive at?

step-by-step explanation:

where is the questions

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