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Answer/Step-by-step Explanation:

==>Given:

Ratio of cost of 1m polyester fabric to 1m of cotton fabric = 2:7

I.e. if 1m of polyester fabric = £2, then 1m of cotton fabric = £7.

==>Required:

a. Cost of polyester fabric for the following lengths:

i) 6m ii) 8m iii) 9m

Thus, having known that cost of 1m polyester fabric = £2, therefore,

i) 6m polyester fabric = 6×2 = £12

ii) 8m polyester fabric = 8×2 = £16

iii) 9m polyester fabric = 9×2 = £18

b. Cost 8 cotton fabric for the following lengths:

i) 2m ii) 6m iii) 8m iv) 9m

Thus, since 1m of cotton fabric = £7, therefore,

i) 2m cotton fabric = 2×7 = £14

ii) 6m cotton fabric = 6×7 = £42

iii) 8m cotton fabric = 8×7 = £56

iv) 9m cotton fabric = 9×7 = £63

54

step-by-step explanation:

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4.

step-by-step explanation:

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