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31 (Edexcel/Math B/2016/janR/paper01/q1)
Showing your working clearly, find the Lowest Common Multiple (LCM) of 24, 180 and 504

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32 (Edexcel/Math B/2014/jan/paper01/q1)
John is travelling from London to Hong Kong.
12.35 Hong Kong dollars are worth 1 UK pound (£).
He wants to buy 50 Hong Kong dollars.
Calculate how much 50 Hong Kong dollars are worth in UK pounds.

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33 (Edexcel/Math B/2014/janR/paper01/q12)
From an online website, I purchased an electronic gadget from Singapore. The cost of the gadget in Singapore dollars (SGD) was 82 SGD. The total I paid for the gadget and the postage in British pounds (GBP) was 50 GBP. The exchange rate was 1 SGD = 0.5036 GBP. Calculate the cost of the postage in SGD. Give your answer to 2 decimal places

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34 (Edexcel/Math B/2016/jan/paper01/q11)
From an online website, I purchased an electronic gadget from Singapore. The cost of the gadget in Singapore dollars (SGD) was 82 SGD. The total I paid for the gadget and the postage in British pounds (GBP) was 50 GBP. The exchange rate was 1 SGD = 0.5036 GBP. Calculate the cost of the postage in SGD. Give your answer to 2 decimal places

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35 (Edexcel/Math B/2016/juneR/paper01/q2)
Sarah wants to change 385 US dollars into British pounds (£). Given that £1 = 1.54 US dollars, calculate how much she should get for 385 US dollars.

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36 (Edexcel/Math B/2014/jan/paper01/q3)
The sales tax for a radio is 16% of the cost price.
The sales tax is to be increased from 16% to 20% of the cost price.
Calculate the percentage increase in the sales tax.


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37 (Edexcel/Math B/2014/juneR/paper01/q2)
Find $33\frac1
3$ % of £37.92


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38 (Edexcel/Math B/2015/janR/paper01/q10)
Express 270m as a percentage of 30 km.

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39 (Edexcel/Math B/2015/june/paper01/q11)
In a country, the number of people who are more than 60 years old is 23% of the population.
Of these people who are more than 60 years old, 42% are men.
The population of the country is 50 million.
Calculate, to the nearest million, the number of women in this country who are more
than 60 years old.


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40 (Edexcel/Math B/2015/june/paper01/q1)
Express $22\frac 12$  minutes as a percentage of one hour


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