Change the fraction and decimal to percentage so that they will all be in percentages.

Percentage is simply multiplying by 100%.

0.45 ⇒ 0.45 x 100% = 45%

$\frac{3}{4}$ ⇒ $\frac{3}{4}$ x 100% = 75%

25% is already in percentage

Now arrange in ascending order

Note: Ascending means from lowest to highest.

25%, 45%, 75%

45% = 0.45

75% = $\frac{3}{4}$

Hence the ascending order is 25%,0.45,$\frac{3}{4}$

Let y = area of the field

First day area cleared = 40% of y

First day area cleared = $\frac{40}{100}$ x y = 0.4y

Remaining uncleared area = y - 0.4y

Remaining uncleared area = 0.6y

Second day area cleared = 60% of remaining

Second day area cleared = $\frac{60}{100}$ x 0.6y

Second day area cleared = 0.36y

Remaining area after the second day = 0.6y - 0.36y

Remaining area after the second day = 0.24y

Percentage = $\frac{\mathrm{Number}}{\mathrm{Total}}$ x 100%

Percentage of the land remaining at the end of the second day = $\frac{\mathrm{0.24y}}{\mathrm{y}}$ x 100%

Note: the ys cancel each other.

Percentage of the land remaining at the end of the second day = $\frac{\mathrm{0.24\; x\; 1}}{1}$ x 100% = 24%

Percentage for selling price = 100%

Percentage received = 100% - Commission%

Percentage received = 100% - 9%

Percentage received = 91%

Amount received = GH₵ 236,600

If 91% = GH₵ 236,600

100% = $\frac{\mathrm{GH₵\; 236,600\; x\; 100\%}}{\mathrm{91\%}}$ = GH₵ 260,000

∴ Selling price = GH₵ 260,000.00

Let x = actual value

Percentage error = 5%

Multiply both sides by x

(x - 3.99) x 100 = 5 x x

100x - 399 = 5x

100x - 5x = 399

95x = 399

Divide both sides by 95

x = $\frac{399}{95}$

x = 4.2

∴ the actual value is 4.2 m

The total sales is 100%

Change the mixed fraction to improper fraction

12$\frac{1}{2}$% = $\frac{\mathrm{2\; x\; 12\; +\; 1}}{2}$% = $\frac{\mathrm{24\; +\; 1}}{2}$% = $\frac{25}{2}$%

If $\frac{25}{2}$% = $35,000.00

100% = $35,000.00 x 100% ÷ $\frac{25}{2}$%

% cancels each other.

Reciprocate the fraction at the right of the ÷ and change ÷ to multiplication (x)

Note: reciprocate means the numerator becomes the denominator and the denominator becomes the numerator.

100% = $35,000.00 x 100 x $\frac{2}{25}$ = $280,000

Discount % = $\frac{\mathrm{Discount}}{\mathrm{Actual\; Price}}$ x 100%

Discount = Actual Price - Selling Price

Actual price for the 5 tins = GH₵ 15.00 x 5
Actual price for the 5 tins = GH₵ 75.00

Discount = GH₵ 75.00 - GH₵ 66.00
Discount = GH₵ 9.00

Discount % = $\frac{\mathrm{GH₵\; 9.00}}{\mathrm{GH₵\; 75.00}}$ x 100%

Discount % = 12%

100% represents the original price

% Paid = 100% - %Discount

% Paid = 100% - %20

% Paid = 80%

Amount paid = $ 525.00

If 80% = $ 525

100% = $\frac{\mathrm{100\%\; x\; \$\; 525}}{\mathrm{80\%}}$ = $ 656.25

100% represents the cost price.

Selling Price % = Cost Price % + Profit %

Profit % = 15%

Selling Price % = 100% + 15%

Selling Price % = 115%

Selling Price = ₦6,900

If 115% = ₦6,900

100% = $\frac{\mathrm{₦6900\; x\; 100\%}}{\mathrm{115\%}}$ = ₦6,000

Cost price = ₦6,000

Profit = Selling Price - Cost Price

Profit when sold at ₦6600 = ₦6600 - ₦6,000

Profit when sold at ₦6600 = ₦600

If ₦6,000 = 100%

₦600 = $\frac{\mathrm{₦600\; x\; 100\%}}{\mathrm{₦6000}}$ = 10%

Let y = area of the field

First day area cleared = 40% of y

First day area cleared = $\frac{40}{100}$ x y = 0.4y

Remaining uncleared area = y - 0.4y

Remaining uncleared area = 0.6y

Second day area cleared = 60% of remaining

Second day area cleared = $\frac{60}{100}$ x 0.6y

Second day area cleared = 0.36y

Remaining area after the second day = 0.6y - 0.36y

Remaining area after the second day = 0.24y

Percentage = $\frac{\mathrm{Number}}{\mathrm{Total}}$ x 100%

Percentage of the land remaining at the end of the second day = $\frac{\mathrm{0.24y}}{\mathrm{y}}$ x 100%

Note: the ys cancel each other.

Percentage of the land remaining at the end of the second day = $\frac{\mathrm{0.24\; x\; 1}}{1}$ x 100% = 24%