New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Quadrilaterals Self Practice 10A Solution (1) Find the value of unknown angle in each of the following figures. Solution Number 1: (2) Find the value of x. Solution Number 2: (3) Find the measures of the four angles of a quadrilateral if they are in […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Pairs and Angles Self Practice 9B Solution (1) Name the pair of angles marked as A for alternate, B for corresponding and C for co-interior. Solution: (a) A (b) B (c) C (d) A (e) C (f) B (g) B (h) A (2) Give examples […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Pairs and Angles Self Practice 9A Solution (1) What is measure of complement of 380 (2) What is measure of supplement of 170o (3) Tell whether the angles shown below are complementary, supplementary or neither. (4) For each angle in group A, find its complement […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8H Solution Find the missing value. (1) I if P = Rs. 800, R = 5% p.a., T = 2 years. (2) I if P = Rs. 5000, R = 6.5% p.a. T = 3 years. (3) R is […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8G Solution (1) Find the profit or loss per cent. (a) C.P. = Rs. 500, S.P. = Rs. 650 (b) C.P. = Rs. 900, S.P = Rs. 828 (c) C.P. = Rs. 325, overheads = Rs. 25, S.P = […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Variation Self Practice 9C Solution (1) 6 men take 12 hours to weed a certain field. How long would 9 men take to do so, if all work at the same rate? (2) 12 men can hoe a field in 10 days. How long will […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Variation Self Practice 9B Solution (1) State the relationship between the given variables as an equation, using k for the constant of variation. (a) The volume V a gas at a fixed temperature varies inversely as the pressure P. (b) The current l in an […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Variation Self Practice 9A Solution (1) Tell whether each relationship is a direct variation. Explain. If yes, state the constant of variation. (a) x 1 2 3 4 y 3 6 9 12 (b) x 10 5 3 y 16 8 7 (c) x 4 […]
New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Percentage and Its Applications Self Practice 8F Solution (1) 55 per cent of the students in a school are girls. What percentage of the students are boys? Find the number of students, if there are 216 boys. (2) If 10% is deducted from a bill, […]
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 […]