Determine if the following ratios form a proportion. Write the middle terms and extreme terms where the ratios form a proportion.
(i) $2 k g : 80 k g$ and $25 g : 625 g$
(ii) $21 g : 35 g$ and $6$ ribbons : $15$ ribbons

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Solution

$1) 2 : 80 = 1 : 40 25 : 625 = 1 : 25$
They are not equal.
$2) 21 : 35 = 3 : 5 6 : 15 = 2 : 5$
They are not equal

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2 k g; 80 k g

25 g; 625 g

Question 4(c)

Determine if the following ratios form a proportion. Also, write the middle terms and extreme terms where the ratios form a proportion:

2 kg : 80 kg and 25 g : 626 g

Determine if the following ratios form a proportion. Also, write the middle terms and extreme terms where the ratios form a proportion.

(a) 25 cm: 1 m and Rs 40 : Rs 160

(b) 39 litres: 65 litres and 6 bottles: 10 bottles

(d) 200 mL: 2.5 litre and Rs 4: Rs 50

9 l i t r e s; 15 l i t r e s

6 b o t t l e s; 10 b o t t l e s

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