It depends on what you are trying to calculate but the most common way I go to find percentage is to multiply by the number in decimal for ie. 50% = .5.
If you are looking for a way to do it quickly in your head I always take find out what 10% is like in the case of 100 it would be 10 so if I want to find 15% I know I can find 10% and if I cut what 10% is in half I will find 5% so likewise if I add what 10%+5% I will end up with 15%. For example, 10% of 100 is 10 half of 10 is 5 and 10+5 equals 15. If you need to find something like 20% or 30% I know that I can find 10% and instead of dividing(cutting it in half) I can multiply by 2 or 3. 10% + 10% =20%
I hope it helps, if you have more questions let me know!
The length would be 6 and the width would be 4 to get 24 as the area.
I think you have to estimate to a whole so 2 1/2 would be 3
Answer:
<h2><em><u>x</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>9</u></em></h2>
Step-by-step explanation:
<h3>
<em><u>To</u></em><em><u> </u></em><em><u>Find</u></em><em><u>:</u></em><em><u>-</u></em></h3>
<h3><em><u>Given</u></em><em><u>:</u></em><em><u>-</u></em></h3>
- 46° and (5x - 1)° are complementary angles
<h3><em><u>Solution</u></em><em><u>:</u></em><em><u>-</u></em></h3>
As we know,
Complementary angles:
The angles whose sum results to 90° are known as the <em><u>complementary</u></em><em><u> </u></em><em><u>angles</u></em><em><u>.</u></em><em><u> </u></em>
So,
46° + (5x - 1)° = 90°
- <em>[</em><em>Since</em><em> </em><em>complementary</em><em> </em><em>angles</em><em>]</em>
=> 46 + 5x - 1 = 90
- <em>[</em><em>On</em><em> </em><em>Simplification</em><em>]</em>
=> 45 + 5x = 90
- <em>[</em><em>On</em><em> </em><em>subtracting</em><em> </em><em>both</em><em> </em><em>sides</em><em> </em><em>with</em><em> </em><em>45</em><em>]</em>
=> 45 + 5x - 45 = 90 - 45
- <em>[</em><em>On</em><em> </em><em>Simplification</em><em>]</em>
=> 5x = 45
- <em>[</em><em>On</em><em> </em><em>dividing</em><em> </em><em>both</em><em> </em><em>sides</em><em> </em><em>with</em><em> </em><em>5</em><em>]</em>

- <em>[</em><em>On</em><em> </em><em>Simplification</em><em>]</em>
=> x = 9
<em><u>Hence</u></em><em><u>,</u></em><em><u> </u></em><em><u>required</u></em><em><u> </u></em><em><u>value</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>x</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>9</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em>
Answer:
1,125
Step-by-step explanation:
45 x 25 = 1,125
Marcus spends 1,125 minutes more than he does chores.