1/2 of 20 is 20/2 which is 10.
All you really need to do here is to divide 20 by 2 to get 10.
Explanation:
To do long division, follow the method pattern "DMS down".
D for divide.
M for multiply.
S for subtract.
Down is to bring down.
Use an example:
52 ÷ 2?
Divide 2 by the first digit of 52.
2 Whenever you divide, put the answer at the top.
2∫52
Multiply answer by number you are dividing by.
2
2∫52
4 When not dividing, put the work under the question.
Subtract.
2
2∫52
<u>4</u><u> </u>
1
Bring down the next digit.
2
2∫52
<u>4 </u>
12
Divide into the new difference 12.
26
2∫52
<u>4 </u>
12
Multiply the new digit.
26
2∫52
<u>4 </u>
12
12
Subtract.
26
2∫52
<u>4 </u>
12
<u>12</u><u> </u>
0 You stop when you get to 0. If you ran out of digits to bring down, write this as a remainder.
A dodecagon is the answer
Decrease in the price is = 320 - 240 = 80
So, percentage will be: 80/320 * 100 = 25%
So, option A is your answer.
Hope this helps!
Both angles OML and OPL are right angles (90 degrees) because they are located at the point of intersection of a tangent line to a circle.
