sorry... not good with percentages?

Question

i need to know whats 20% of £90.

im dumb and dont know how to work out percentages

Answer 1

Well, if you're doing it mentally - think:
10% of £90 is £9
Twice that, or 20% is £9 X 2 = £18

Answer 2

20% of 90 = .20 X 90 = 18

Answer 3

A percentage is a part of a hundred.So 20% is 20 parts of a hundred which is a fifth.so 20% of £90 is the same as a fifth of £90. A simple sum now is 90 divided by 5 which is 18.

Answer 4

The term Percentage (%) is a way of comparing portions of different totals
Per cent is translated from per hundredth

So if required to find N% of a total X

To calculate

Written in full becomes: [ X divided by 100 ] multiplied by N

So in your example 20% of £90

Becomes [90 divided by 100] multiplied by 20

Simplification

{90 x 20} / 100

Divide through leaves 9 x 2 = 18

Therefore 20% of £90 = £18



See if the following helps:

The use of percentages often makes it easier to compare fractions that do not have a common denominator (a number divisible by both the bottom numbers), for instance when comparing rates of inflation or rates of simple interest.

To convert a fraction to a percentage on a calculator, divide the numerator (the 'top') by the denominator (the 'bottom') and then multiply by 100.

The percentage will correspond to the first two figures of the decimal; for example, 7/12 = 0.5833333 = 58.3% (correct to 1 decimal place), and 7/32 = 0.21875 = 21.9% (correct to 1 decimal place).

The percentage sign is thought to have been derived as an economy measure when recording in old counting houses; writing in the numeric symbol for 25/100 would take two lines of parchment, and hence the ‘100’ denominator was put alongside the 25 and rearranged to ‘%’.

Answer 5

20% of £90
=20% x £90
=20/100 x £90
=1/5 x £90 (or £90/5)
= £18

Answer 6

20% of 90 = 20/100 x 90 = 1/5 x 90 = 18
20% of £90 = £18

Answer 7

.20 * 90 = 18

Answer 8

No problem, we are here to help you. First remember that percentage means hundred.So, whenever they say to find percentage you should write the number/100.To convert into % multiply the no. with 100.Now, to find 20% of 90, 20/100 * 90 =18%. I hope u understood.

Answer 9

The most direct way to do this is probably to put a decimal point before the percentage you are trying to find, then multiply the main figure by that amount, eg;
20% becomes .20 so 90 X .20 = 18, or 17.5% becomes .175 so 90 X .175 = 15.75.
This method works for me, I hope it helps.

Answer 10

20% is just 2 10%'s put together.
to find 10% of a number simply divide it by 10.
£90 / 10 = £9
20% = £9 * 2 = £18

another quick way to find 20% is to divide the number by 5
£90 / 5 = £18.