9514 1404 393
Answer:
11 years ago
Step-by-step explanation:
When Z is 3 times as old as M, the ratio of their ages is ...
M : Z = 1 : 3
The difference in their ages at that time is 3 - 1 = 2 "ratio units". The difference in their current ages is 50 -24 = 26 years, so 1 ratio unit = 26/2 = 13 years. Z was 3 times as old as M when M was 13 years old. (Z was 39.)
That was 24 -13 = 11 years ago.
_____
For most age problems, the difference between two ages is assumed to be a constant.
Answer:
168 miles.
Step-by-step explanation:
5/7x+40+0.75x−118=x
Step 1: Simplify both sides of the equation.
5/7x+40+0.75x−118=x
5/7x+40+0.75x+−118=x
(5/7x+0.75x)+(40+−118)=x(Combine Like Terms)
1.464286x+−78=x
1.464286x−78=x
Step 2: Subtract x from both sides.
1.464286x−78−x=x−x
0.464286x−78=0
Step 3: Add 78 to both sides.
0.464286x−78+78=0+78
0.464286x=78
Step 4: Divide both sides by 0.464286.
0.464286x/0.464286=78/0.464286
x=168
Answer:
the correct answer is 5/6
Step-by-step explanation:
5/1 cakes shared by 6/1 people. To divide, we can freeze flip and multiply the fractions to get to 5/1 * 1/6 = 5/6 cakes per person.