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Exam style questions - Hodder Plus Home

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4 The longer side of a rectangle is 2 cm longer than its<br />

shorter side.<br />

Its perimeter is 36 cm.<br />

Let x cm be the length of the shorter side.<br />

a Write down an equation in x. [2]<br />

b Solve your equation to find x. [2]<br />

c Find the area of the rectangle. [1]<br />

5 Solve these equations.<br />

a 3x 2 = 27 [2]<br />

b 4x + 1 = 7 − 2x [3]<br />

3 A car park contains vans and cars. The ratio of<br />

the vans to cars is 1 : 6. There are 420 vehicles in<br />

the car park.<br />

a How many vans are there<br />

b How many cars [2]<br />

4 Adrian, Penelope and Gladys shared a lottery win<br />

in the ratio 2 : 5 : 8.<br />

They won £7000.<br />

How much did each receive, correct to the nearest<br />

penny [3]<br />

5 The table shows the prices of different packs of<br />

chocolate bars.<br />

Pack Size Price<br />

18 Ratio and<br />

proportion<br />

Here is an exam question …<br />

John and Peter did some gardening. They shared the<br />

money they were paid in the ratio of the number of<br />

hours they worked.<br />

John worked for 5 hours. Peter worked for 7 hours.<br />

They were paid a total of £28.80.<br />

How much did each one receive [2]<br />

… and its solution<br />

Ratio is 5 : 7<br />

Total = 12<br />

One share = 28.8 ÷ 12<br />

= £2.40<br />

John receives 5 × 2.40 = £12<br />

Peter receives 7 × 2.40 = £16.80<br />

Check: £12 + £16.80 = £28.80<br />

Now try these exam <strong>questions</strong><br />

1 Some of the very first coins were made with 3 parts<br />

silver to 7 parts gold.<br />

a How much gold should be mixed with 15 g of<br />

silver in one of these coins [2]<br />

b Another coin made this way has a mass of 20 g.<br />

How much gold does it contain [2]<br />

2 A recipe for rock cakes uses 100 g of mixed fruit<br />

and 250 g of flour. This makes 10 rock cakes.<br />

Jason wants to make 25 rock cakes.<br />

How much mixed fruit and flour does he need [2]<br />

Standard 500 g £1.15<br />

Family 750 g £1.59<br />

Special 1.2 kg £2.49<br />

Find which pack is the best value for money. You<br />

must show clearly how you decide. [4]<br />

19 Statistical<br />

calculations 2<br />

Here is an exam question …<br />

A wedding was attended by 120 guests.<br />

The distance, d miles, that each guest travelled was<br />

recorded in the frequency table.<br />

Calculate an estimate of the mean distance<br />

travelled. [5]<br />

Distance (d miles)<br />

Number of guests (f)<br />

0 < d 10 26<br />

10 < d 20 38<br />

20 < d 30 20<br />

30 < d 50 20<br />

50 < d 100 12<br />

100 < d 140 4<br />

© <strong>Hodder</strong> Education 2011 Unit A<br />

17

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