Let the price of adult ticket and children ticket be a and c respectively
8a+5c=177.50 -> 24a+15c=532.5
12a+6c=255.00 -> 24a+12c=510
24a+15c-24a-12c=532.5-510
3c=22.5
c=7.5
a=17.5
Answer:
1/3628800
Step-by-step explanation:
This question requires that we calculate
1/number of permutations of 10 cities
= P(n,k) = n!/(n-k)!
We have
n = 10
k = 10
= 10!/(10-10)!
= 10!
number of permutations of 10 cities 10! This Is equal to 3,628,800
From this answer we the probability of doing a random tour of these 10 different cities in alphabetical order.
And this is
= 1/3,628,800
Answer:
This is basic algebra

Hope that answers your question
Step-by-step explanation:
Answer:
4 brothers and 3 sisters
Step-by-step explanation:
Let x be the number of brothers and y be the number of sisters in the family.
1. Each brother has x-1 brothers and y sisters. If each brother has as many sisters as brothers, then

2. Each sister has y-1 sisters and x brothers. If each sister has twice as many brothers as she has sisters, then

3. Solve the system of two equations:

Then

Can I see the triangle pls