Check sibling questions

Ex 12.1, 1 - Chapter 12 Class 6 Ratio and Proportion

Last updated at May 29, 2023 by

Ex 12.1, 1 - There are 20 girls and 15 boys in a class - Ex 12.1

Ex 12.1, 1 - Chapter 12 Class 6 Ratio And Proportion - Part 2

This video is only available for Teachoo black users

Subscribe Now

Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class

Book a free demo

Transcript

Ex 12.1, 1 There are 20 girls and 15 boys in a class. (a) What is the ratio of number of girls to the number of boys? Number of girls = 20 Number of boys = 15 Ratio = (𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑔𝑖𝑟𝑙𝑠)/(𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑏𝑜𝑦𝑠) = 20/15 = 4/3 ∴ Required ratio is 4 : 3 Ex 12.1, 1 There are 20 girls and 15 boys in a class. (b) What is the ratio of number of girls to the total number of students in the class?Total number of students = Number of girls + Number of boys = 20 + 15 = 35 ∴ Ratio = (𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑔𝑖𝑟𝑙𝑠)/(𝑇𝑜𝑡𝑎𝑙 𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑠𝑡𝑢𝑑𝑒𝑛𝑡𝑠) = 20/35 = 4/7 ∴ Required ratio is 4 : 7

Ask a doubt
Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.