1.

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(c) 2 kg : 80 kg and 25 g : 625 g    (d) 200 ml : 2.5 litre and Rs 4 : Rs 50

Answer» a) 25cm/1m=25cm/100cm=1/4
`40Rs/160 Rs=1/4
They are proportionate
middle terms are 25 cm and 40 Rs
Extreme terms are 1 m and 160 Rs
b)39l/65l 39/65
6/10 bottles=3/5
They are not Proportionate.
c)2kg/80kg=1/40
25g/625g=1/25
They are not proportionate
d)200/2500=2/25
4/50=2/25
They are proportionate
middle terms are 200ml and 4Rs
Extreme numbers are 2.5litre and 50Rs.


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