Step-by-step explanation:
When someone receives a "pay raise", that means that their income/salary increases.
Jerold earns $865 in one week. He receives a 25% pay raise. That means his income has increased by 25% of what he currently earns in one week. We can calculate the percentage of something by converting that percent into a decimal and multiplying it with the value that percent is being applied to.
We can do this two ways.
The first way, we can convert 25% into 0.25, and multiply that with 865:
0.25 × 865 = 216.25
Then, we add $216.25 to Jerold's old salary, $865:
$865 + $216.25 = $1081.25
The second way does everything in one step. When you multiply a number by 1, you always get that same number for the answer.
1 × 33 = 33, 1 × 382 = 382...
So, instead of multiplying by 0.25 and then adding that to Jerold's old salary, we can multiply by 1.25 instead (1, his original salary, + 0.25, the difference between his old and new salary),.
1.25 × $865 = $1081.25.
You can use either method to calculate the answer, but the second method is more efficient.
