NCERT Solutions for Class 7 Maths<\/a> Chapter 8 Comparing Quantities Ex 8.1 Questions and Answers are prepared by our highly skilled subject experts.<\/p>\nNCERT Solutions for Class 7 Maths Chapter 8 Comparing Quantities Exercise 8.1<\/h2>\n <\/p>\n
Question 1. \nFind the ratio of \n(a) \u20b9 5 to 50 paise \n(b) 15 kg to 210 g \n(c) 9 m to 27 cm \n(d) 30 days to 36 hours \nAnswer: \n(a) \u20b9 5 = 5 x 100 paise \n0 = 500 paise \n\u20b9 5 : 50 paise = 500 paise : 50 paise \n= 500 : 50 \n= 10 : 1<\/p>\n
<\/p>\n
(b) 15 kg = 15×1000 g \n= 15000g \n15 kg to 210 g = 15000: 210 g \n= 1500 : 21 \n= 500 : 7<\/p>\n
(c) 9 m = 9 x 100 cm \n= 900 cm \n9 m : 27 cm= 900 : 27 \n= 100:3 (\u00f79)<\/p>\n
(d) 30 days = 30 x 24 hours \n= 720 hours \n30 days : 36 hours = 720 : 36 \n= 20:1 (\u00f736)<\/p>\n
Question 2. \nIn a computer lab there are 3 computers for every6 students. How many computers will be needed for 24 students? \nAns: Let x be the required number of computers. \n3 : x = 6:24 \n\\(\\frac{3}{x}=\\frac{6}{24}\\) \n6x = 3 x 24 \nx = \\(\\frac{3 \\times 24}{6}\\) = 3 x 4 = 12 \nHence, 12 computers will be needed for 24 students.<\/p>\n
<\/p>\n
Question 3. \nPopulation of Rajasthan = 570 lakhs and population of UP = 1660 lakhs. Area of Rajasthan = 3 lakh km2 and area of UP = 2 lakh km2<\/sup>. \n(i) How many people are there per km2 in both these states? \n(ii) Which state is less populated? \nAnswer: \n(i) Population of Rajasthan \n= 570 lakhs \nArea of Rajasthan \n= 3 lakhs km2<\/sup> \nPopulation per km2<\/sup> \n= \\(\\frac{570}{3}\\) lakhs km2<\/sup> \n= 190 lakhs per km2<\/sup> \nIn Rajasthan, there are 190 lakh people per km2<\/sup> \nFor UP \npopulation = 1660 lakhs \nArea = 2 lakhs per km2<\/sup> \npopulation per km2<\/sup> \n= \\(\\frac{1660}{2}\\) per km2<\/sup> \n= 830 lakhs per km2<\/sup> \nIn UP, there are 830 lakhs people per km2<\/sup><\/p>\n <\/p>\n
(ii) 190 lakhs < 830 lakhs \n\u2234 Rajasthan is less populated state.<\/p>\n","protected":false},"excerpt":{"rendered":"
These NCERT Solutions for Class 7 Maths Chapter 8 Comparing Quantities Ex 8.1 Questions and Answers are prepared by our highly skilled subject experts. NCERT Solutions for Class 7 Maths Chapter 8 Comparing Quantities Exercise 8.1 Question 1. Find the ratio of (a) \u20b9 5 to 50 paise (b) 15 kg to 210 g (c) …<\/p>\n
NCERT Solutions for Class 7 Maths Chapter 8 Comparing Quantities Ex 8.1<\/span> Read More »<\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","spay_email":""},"categories":[1],"tags":[],"yoast_head":"\nNCERT Solutions for Class 7 Maths Chapter 8 Comparing Quantities Ex 8.1 - MCQ Questions<\/title>\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\t \n\t \n\t \n