It will cost $0.15 to cover 1000 cm² with paint.

About how much will it cost Chen to paint his office?
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To calculate the cost of painting Chen's office, we need to know the area of his office in square centimeters. Let's assume the office area is A cm².

Given that it will cost $0.15 to cover 1000 cm² with paint, we can set up a proportion to find the cost for Chen's office.

Proportion:
(0.15 dollars) / (1000 cm²) = (C dollars) / (A cm²)

Cross multiplying, we can solve for C (the cost of painting Chen's office):

0.15 dollars * A cm² = 1000 cm² * C dollars
A * 0.15 dollars = 1000 * C dollars
0.15A = 1000C

To find C, we can rearrange the equation:
C = (0.15A) / 1000

Therefore, Chen would need to multiply the area of his office (A) by 0.15 and then divide by 1000 to find the cost in dollars.

To find out how much it will cost Chen to paint his office, we need to know the total area of the office in cm². Once we have that, we can multiply the area by the cost per cm² to calculate the total cost.

So, the first step is to find out the area of Chen's office. If you have the dimensions of the office in meters or feet, you can convert them to cm and then multiply the length by the width to get the total area in cm². Let's assume Chen's office has an area of 2000 cm².

Once we have the area, we can calculate the cost. Given that it will cost $0.15 to cover 1000 cm² with paint, we need to determine how many sets of 1000 cm² are in the total area of the office. To do this, we divide the total area by 1000:

Number of sets = Total area / 1000
Number of sets = 2000 cm² / 1000
Number of sets = 2 sets

Since the cost of 1000 cm² is $0.15, we can multiply the number of sets by the cost per set:

Total cost = Number of sets * Cost per set
Total cost = 2 sets * $0.15/set
Total cost = $0.30

Therefore, it will cost Chen $0.30 to paint his office.