Ex 12.2, 4 (a) - Chapter 12 Class 6 Ratio and Proportion

Last updated at April 16, 2024 by Teachoo

Transcript

Ex 12.2, 4 Determine if the following ratios form a proportion. Also, write the middle terms & extreme terms where the ratios form a proportion. (a) 25 cm : 1 m and Rs 40 : Rs 160
1 m = 100 cm
Now,
25 cm : 1 m
= (25 𝑐𝑚)/(1 𝑚)
= (25 𝑐𝑚)/(100 𝑐𝑚)
= 25/100
= 1/4
= 1 : 4
Rs 40 : Rs 160
= (𝑅𝑠 40)/(𝑅𝑠 60)
= 40/160
= 4/16
= 1/4
= 1 : 4
∴ 25 cm : 1 m = Rs 40 : Rs 160
So, given ratios are in a proportion
Here,
Middle terms = 1 m, Rs 40
Extreme terms = 25 cm, Rs 160

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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