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 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 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 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 […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Linear Equations in One Variable Practice 6B Solution (1) x/2 + 5 = 8 (2) y/3 – 1 = 7 SOLUTION Number 1 & 2: (3) 2 – m/8 = 5 (4) m/40 – 7 = 0 (5) 2x/5 – 18 = -24 SOLUTION Number […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Linear Equations in One Variable Practice 6A Solution Solve the following equations. (1) (a) 2x + 7 = 11 (b) 8 + 5y = 23 (c) 4x – 9 = 7 (d) y/7 + 1 = 3 (e) 6 + t/4 = 9 (f) x/3 […]