Ratio help, confused 

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Polyester fabric: £4  £8  £16  £22

Silk fabric:        £18 £36 £72  £99

a) PQ=6QR, PR=PQ+QR=7QR=98cm, QR=98/7=14cm, PQ=6×14=84cm.

b) XQ=2PX, PQ=PX+XQ=6 divisions=3XQ, so XQ is 2 divisions and PX is 4 divisions:


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