A painter can paint 375 square feet in 3 hours. At this rate, how many square feet can he paint in 7 hours?(1 point)
square feet
To find the number of square feet the painter can paint in 7 hours, we can set up a proportion.
If the painter can paint 375 square feet in 3 hours, we can set up the proportion:
375 square feet / 3 hours = x square feet / 7 hours
To solve for x, we can cross multiply:
3 * x = 375 * 7
3x = 2,625
Dividing both sides by 3, we find:
x = 875
Therefore, the painter can paint 875 square feet in 7 hours.
To find out how many square feet the painter can paint in 7 hours, you can set up a proportion using the given information.
The painter can paint 375 square feet in 3 hours, so the ratio of square feet to hours is 375/3 = 125 square feet per hour.
Let x represent the number of square feet the painter can paint in 7 hours.
So, the proportion can be set up as:
125 square feet / 1 hour = x square feet / 7 hours
Now, we can solve for x by multiplying both sides of the equation by 7:
125 square feet / 1 hour * 7 hours = x square feet
This simplifies to:
875 square feet = x
Therefore, the painter can paint 875 square feet in 7 hours.
To find out how many square feet the painter can paint in 7 hours, we can use a proportion.
Let's set up the proportion:
Square Feet / Hours = Square Feet / Hours
We know that the painter can paint 375 square feet in 3 hours, so we can substitute these values in the proportion:
375 / 3 = x / 7
Now, we can solve for x, which represents the number of square feet the painter can paint in 7 hours.
To isolate x, we can cross multiply:
3 * x = 375 * 7
Multiply the numbers on each side of the equation:
3x = 2625
Finally, divide both sides of the equation by 3 to solve for x:
x = 2625 / 3
Therefore, the painter can paint approximately 875 square feet in 7 hours.
A scientist is growing bacteria in a beaker. At this rate, in 4 hours, 122 bacteria have grown. How many bacteria will grow in 6 hours?(1 point)
bacteria