Answer:
$295,245
Step-by-step explanation:
Each year the value is 0.9 times what it was the year before. After 5 years, the value is ...
$500,000 × 0.9^5 = $295,245
Amy = x
Betty = y
Carl = z
x + y = 29
x + z = 27
y + z = 22
y = 29 - x
z = 27 - x
29 - x + 27 - x = 22
-2x + 56 = 22
-2x = - 34
x = 17
y = 12
z = 10
Oldest child is Amy (17) and youngest child is Carl (10)
17 - 10 = 7
The difference between oldest child and youngest child is 7 years.
Speed = distance/time
So speed = 40/10
= 4m/s
