Question

do the ratio 15 cm to 3 m and 15 seconds to 3 minutes form a proportion? justify your answer​

Answer 1

15cm : 3m

= 15cm : 300cm
= 3 : 100.

15sec : 3mins

= 15sec : 180sec
= 3sec : 60sec
= 1 : 20.

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Answer 2

i)15cm to 3m

15cm to 300cm

15/300

1:20

ii) 15 seconds to 3 minutes

15 sec to 180 sec

15/180

1:12

Now,

1:20 :: 1 : 12

We know,

Product of mean terms = Product of extreme terms

20 × 1 = 12 ×1

20 not equal to 12

Thus these are not in proportion