[color=#ff0000][b]i) 153.6[br]ii) 520[br]iii) 76.8[/b][/color][br][br]Method for part i)[br][br]100 % = 480[br]   ([math]\div100[/math] both sides)[br]1 % = 4.8[br]   ([math]\times32[/math] both sides)[br]32 % = 153.6[br][br]The same method works for parts ii) and iii) replacing the 480 with 800 and the 32 with 65.[br]

[color=#ff0000][b]14%[br][br][/b][/color]There are different ways to solve this kind of problem[br][br]Method 1[br][br]We have 35 out of 250, so we can write this as the fraction [math]\frac{35}{250}[/math].[br][br]We can convert this to a percentage by multiplying by 100.[br][br]So the calculation is [math]\frac{35}{250}\times100=14\%[/math][br][br]Method 2[br][br]250 is our whole, so,[br][br]250 = 100 %[br]    ([math]\div250[/math] both sides)[br]1 = 0.4 %[br]    ([math]\times35[/math] both sides)[br]35 = 14 %[br][br]Both methods give the same result. Either is acceptable.

[color=#ff0000][b]87 %[br][br][/b][/color]This is basically the same as the previous question, but with more words around it. It is asking what percentage of 60 is 52?[br][br]Method 1[br][br]100 % = 60[br]   ([math]\div60[/math] both sides)[br]1.67 % = 1    ([color=#0000ff]1 mark is 1.67 %[/color])[br]   ([math]\times52[/math] both sides)[br]87 % = 52    ([color=#0000ff]52 marks are 87 %[/color])[br][br]Method 2[br][br]The fraction of marks the student has got is [math]\frac{52}{60}[/math] i.e. 52 out of 60.[br][br]To convert a fraction to a percentage, multiply by 100.[br][br]So the calculation to do is [math]\frac{52}{60}\times100=87\%[/math]

[color=#ff0000][b]140[br][br][/b][/color]Method[br][br]60 % = 84[br]   ([math]\div60[/math] both sides)[br]1 % = 1.4[br]   ([math]\times100[/math] both sides)[br]100 % = 140[br][br]You may feel confident to do this in one calculation, however breaking it down into smaller steps is sometimes helpful.

[color=#ff0000][b]4kg[br][br][/b][/color]The question is basically asking, what is 80 % of 5 kg?[br][br]Method 1[br][br]80% of 5 kg = [math]\frac{80}{100}\times5=4[/math]kg[br][br]Method 2[br][br]5 kg = 100 %[br]    ([math]\div100[/math] both sides)[br]0.05 kg = 1 %[br]    ([math]\times80[/math] both sides)[br]4 kg = 80 %[br][br]There are other methods that could be used.

[color=#ff0000][b]425[br][br][/b][/color]There are different methods that can be used[br][br]Method 1[br][br]If there is a 15 % discount, that means the final price is 85 % of the original price. (100 % -15 % = 85 %)[br][br]85 % of £500 = [math]\frac{85}{100}\times£500=£425[/math][br][br]Method 2[br][br]Find 15 % of £500.[br][br]£500 = 100 %[br]   ([math]\div100[/math] both sides)[br]£5 = 1 %[br]   ([math]\times15[/math] both sides)[br]£75 = 15 %[br][br]So the discounted price is £500 - £75 = £425[br][br]There are other methods, and you may have used a combination of the two methods.