New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8E Solution (1) Ravi’s class has 19 boys and 12 girls. What is its percentage composition? (2) Chalk contains 10% calcium, 3% carbon and 12% oxygen. Find the amount of carbon and calcium (in grams) in 2 and 1/2 […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8D Solution (1) Increase: (a) Rs. 50 by 20% (b) Rs. 700 by 8% (c) 600 g by 18% (d) 4L by 15% (e) 8 km by 19% (f) 5 kg by 23% (2) Decrease: (a) Rs. 170 by […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8B Solution Find. (1) (a) 25% of 32 (b) 16-1/3% of 390 (c) 50% of 29 (d) 33-1/3% of 150 (e) 20% of 775 (f) 15% of 3000 (g) 28% of 1225 (h) 18% of 2650 (2) (a) 10% […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8A Solution (1) Express each of the following as a percentage. (a) (i) 1/5 (ii) ¾ (iii) 17/50 (iv) 11/20 (v) 2-9/10 (vi) 2-8/25 (b) (i) 0.3 (ii) 0.47 (iii) 0.89 (iv) 1.05 (v) 0.09 (vi) 0.769 (vii) 3 […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Ratio and Proportion and Unitary Method Self Practice 7C Solution (1) If 30 m of cloth cost Rs. 2400, what is the cost of 50 m cloth? (2) If 8 ball pens cost Rs. 40, how much will 20 ball pens of the same kind […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Ratio and Proportion and Unitary Method Self Practice 7B Solution (1) Find out whether the following groups of numbers are in proportion or not. (a) 18, 20, 9, 10 (b) 21, 6, 35, 10 (c) 12, 18, 28, 12 (d) 5.2, 3.9, 3, 4 (e) […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Percentage and Its Application Self Practice 8E Solution Without using C.I. formula, calculate compound interest on: (1) Rs. 6000 for 2 years at 10% p.a. (2) Rs. 15000 for 2 years at 8% p.a. (3) Rs. 50,000 for 2 1 by 2 years at 10% […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Percentage and Its Application Self Practice 8D Solution (1) Find the simple interest and the amount of simple interest of (a) Rs. 350 for 3 years at 6% (b) Rs. 765 for 2 1 by 2 years at 5 1 by 3 percent (c) Rs. […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Percentage and Its Application Self Practice 8C Solution (1) Find the profit per cent, if an article purchased for Rs. 225 with overhead expanses of Rs. 15 is sold for Rs. 300. (2) By Selling an article for Rs. 960 a man incurs a loss […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Percentage and Its Application Self Practice 8B Solution (1) If 45% people in a city like football, 40% like cricket and the remaining like other games, then what per cent of the people like other games? If the city has a population of 4,00,000 people, […]