Answer:
The expression for rate per hour is [tex]\frac{340}{45}\times 60[/tex].
Explanation:
Given:
A machine paints 340 toy boats in 45 minutes.
To Find:
Expression equals the rate per hour?
Solution:
Finding the expression for rate per minute:
[tex]\text{{The rate per minute expression}} =\frac{\text{{ (number of toys painted in time given)}}}{\text{{(number of minutes taken)}}}[/tex]
So, rate per minute expression is [tex]\frac{(340 toys)}{(45 minutes)}[/tex] = [tex]\frac{340}{45}[/tex]
Then, rate per hour expression [tex]\text{{rate per minute}}\times 60 minutes[/tex]
So, rate per hour expression is [tex]\frac{340}{45}\times60 minutes[/tex]= 453.334 toys per hour.
Hence, the expression for rate per hour is [tex]\frac{340}{45}\times 60[/tex]
