Detailed explanation:
Work completed by Gardner each hour = 1 / 5
Combined work done by Gardner and assistant each hour = 1 / 4
Work done by the helper per hour
= 1 / 4 - 1 / 5
= 1 / 20
Time required for helper to finish the job:
= 20 hours
Response:
12 --> 15
This reflects a 25% rise.
To calculate the increase: New Number - Original Number
15 - 12 = 3
Next, divide the increase by the original number and multiply the result by 100.
3/12 = 1/4 = 0.25 x 100 = 25
Thus, the percentage increase amounts to 25%
Manuel has opted to construct a fence to define a play area for his dogs, which will be a rectangular shape. Since only three sides require fencing because his house acts as one side of the rectangle, we conclude that the optimal area configuration will consist of two shorter sides each measuring 20 feet and a longer side measuring 40 feet.
Addends refer to the numbers being summed in an equation.
Their arrangement only matters if parentheses are utilized to modify the usual Order of Operations.
For example:
2 - (8 + 3) in this case, 8 and 3 must be grouped first before tackling the subtraction.
Any addition scenario without parentheses can similarly function where the grouping is irrelevant.
