This is a system of equations.
Let L represent Lucia, and B represent Ben
The first equation is:
L + B = 150
The second one says that for every dollar ben saved, Lucia saved twice as much. So:
L = 2B
Now, solve the system
2B + B = 150
3B = 150
B = 50
L = 2(50)
L = 100
This means that Ben saved $50, and Lucia saved $100
Given:
Number of spheres = 2
Number of prisms = 3
Number of pyramids = 5
To find:
The probability that a pyramid will be selected.
Solution:
We have,
Favorable outcomes = Number of pyramids
= 5
Total outcomes = Total number of figures
= 
= 
Now, the required probability is:



Therefore, the probability that a pyramid will be selected is 0.5.
Answer:
Step-by-step explanation:
Answer: 16,000 Miles
How I got that? well I was taught that if the number is 5 or higher you should round it off to the left by 1... I basically just ad a 1 to the 15 because the 6 was higher than 5 so I got 15,680 - 16,000.