From the second:
2x-y=4
x=(4+y)/2 and applying this to first:
4+y+3y=12
4y+4=12
4y=8
y=2 and since x=(4+y)/2, x=3 so
x+y=2+3=5
Answer:
Step-by-step explanation:
Both of these questions involve proportions. You can set up an equation using equivalent fractions. You want to express to ratio of cm to km in Part A. Given the scale factor 5 cm = 2 km, then we can let c = the number of cm that represent an actual distance of 5 km. The following equation can be formed:
5/2 = c/5
Both of these fractions are a ratio of cm to km. To solve, we can cross-multiply.
2c = 25
c = 12.5 cm
You can use a similar process for Part B.
Answer:
????
Step-by-step explanation:
1 foot = 12 inches (you're supposed to know this)
so
2 feet = 24 inches
and
3 feet = 36 inches .
Answer: 192 people
Step-by-step explanation:
We can set up a ratio.
Let x be the number of men working in the company.
We can cross umltiply.
360 = 5x
x = 72 men.
Therefore, the total number of employees = 120 women + 72 men
= 192 people.
