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 8C Solution (1) What percentage is: (a) 7 of 70? (b) 8 of 32? (c) 19 of 25? (d) 117 of 650? (e) 180 of 300? (f) 850 of 3400? (g) 780 of 1950? (h) 27 of 9? (2) […]
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 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 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 7 Ratio and Proportion and Unitary Method Self Practice 7A Solution (1) Express each of the following ratios in its simplest form. (a) A length of 6 cm to a length of 8 cm. (b) An area of 20 cm square to an area of 45 […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Algebraic Expressions Self Practice 5C Solution (1) Subtract (a) 2x from 7x (b) -5a from -2a (c) 3b2 from -5b2 (d) -2xy from 0 (e) -8cd from 8cd (f) 3(x + y) from 4(x + y) (2) Subtract the lower expression from the upper expression. […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Linear Equations in One Variable Practice 6C Solution (1) The number decreased by 7 is 25, find the number. (2) The number increased by 10 is 16, find the number. (3) The number is multiplied by 2, and 8 is added to the product, the […]