Level 2: Calculate percentages change (any size increase and decrease ...

[Pages:2]Level 2: Calculate percentages change (any size increase and decrease), and original value after percentage change Answers

1. Calculate:

Question

Answer

Increase ?70 by 35%

135/100 x 70 = ?94.50

Increase 127cm by 27% Decrease 91km by 14% Decrease 7299ml by 99%

127/100 x 127 = 161.29cm 86/100 x 91 = 78.26km 1/100 x 7299 = 72.99

Increase 3780 by 50% Increase 8045 by 7% Decrease 404 by 16% Decrease 94 495 by 88%

5670 5670 ? 150/100 = 3780

8,608.15 8608.15 ? 107/100 = 8045

339.36 404 ? 339.36 = 64.64 64.64/404 = 0.16 11,339.4 94 495 ? 11 339.4 = 83 155.6 83 155.6/94 495 = 0.88

2. Joan wants to buy a pair of shoes which normally cost ?62. The shoes are now on sale in store, 32% off.

Work out the price of the shoes when on sale in store. 100% - 32% = 68% 68/100 x 62 = ?42.16

Joan found the same pair of shoes online, for ?65 but 35% off. Is this a better offer than the one in store? 100% - 35% = 65% 65/100 x 65 = ?42.25 No, the price in store is better.

3. Yes, this is true. Here is another example. 56% of ?89 = ?49.84 89% of ?56 = ?49.84



4. Ian is making a purchase online. The total after VAT is ?1802.40. This includes to VAT, which is 20% of the total. Work out the total before VAT. 1802.95 ? 120/100 = ?1502

5. Yes, this is correct. When 5% of an amount is deducted, you are left with 95% of the amount.



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