1.

Are ratios 15 cm to 2 m and 10 sec to 3 min, in proportion?

Answer»

⇒ By ratio of 15 cm to 2 m. 

= 15 : 2 × 100 = 15 : 200 (∵ 1 m = 100 cm) 

⇒ by ratio of 10 sec to 3 min. 

= 10 sec : 3 × 60 sec ( ∵ 1 min = 60 sec ) 

= 10 : 180 = 1 : 8 

3/40 ≠ 1/18

Thus, they are not in proportion



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