Ceiling = 5 x 4 = 20 m²
The 4 walls = ( 5 + 5 + 4 + 4) x 3 = 18 x 3 = 54 m²
Total area = 20 + 54 = 74 m²
1 m² = $7.50
74 m² = $7.50 x 74 = $555.
Answer: It will cost $444 to white-wash the walls and the ceiling.
10)
6y - 16 = 4y + 6
2y = 22
y = 11
11)
2x + 5x + 5 = 180
7x + 5 = 180
7x = 175
x = 25
Answer:
Percentages would be a change from $55 to $85 a week this is found by dividing. = 55 / 85 = 64.705882352941%
64.7%
We could also consider ratio if two people or two products cost had two amounts per week ie) car insurance vs home insurance
55 to 85 = 55:85 = 11:17
We have found prime number ratio and they are simplified numbers of 55:85
Step-by-step explanation: