How do I answer this question? GCEO A Math 2017, No. 10. The attached file is named "am_2017_10.jpg"

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How would you solve this? It was GCE O E-Math 2016,No.17.

em_2016_17.jpg

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At first, John had some $10 notes and $2 notes in the ratio of 3 : 8. After exchanging two $10 notes for $2 notes, the ratio of $10 notes to $2 notes became 1 : 3.

Find the amount of money John had.

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Jess wants 200 ribbons of length 110 cm for a party. However, the ribbons were sold at 25 m per tape.

How many tapes will Jess need?

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The figure below shows the net of a cube. Find its volume .

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A tricky vector question is here. Pls solve this. Urgent. Due in next 3 days.

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A question about functions. Can you solve that for me?

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Please show me how to solve this problem. GCEO A Math 2017,No. 6. Picture in am_2017_6.jpg

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In the figure below, PQRS is trapezium. TQR and PQU are straight lines. Find the angle x.

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How many faces are there in the solid below?

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