Question

find the ratio a) 9 m to 81 cm b) 15 kg to 25 kg

Answer 1

a) 9m = 9 * 100 cm = 900 cm
  900 cm : 81cm(Can be canceled by 9)
   100 : 9
b)15 : 25(Can be canceled by 5)
     3 : 5

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Answer 2

A => 9 m =900 cm

B => 81 cm

Ratio = A:B = 900:81= 100:9

PART II

A=15kg
B=25kg

Ratio= 15:25 =∆> 3:5