Chapter 11 Algebra Very Short Answer Type Question 1. Six less than a number equals to two. What is the number? Solution: Let the number be ‘x’. According to condition, we have x – 6 = 2 By inspections, we have 8 – 6 = 2 ∴ x = 8 Thus, the required number is 8....
Chapter 11 Algebra Ex 11.5 Question 2. Complete the entries in the third column of the table. S. No. Equation Value of variable Equations satisfied Yes /No (a) 10y = 80 y = 10 (b) 10y = 80 y = 8 (c) 10y = 80 y = 5 (d) 4l = 20 l = 20 (e) 4l = 20 l = 80 (f) 4l = 20...
Chapter 11 Algebra Ex 11.4 Question 1. Answer the following: (a) Take Sarita’s present age to bey years. (i) What will be her age 5 years from now? (ii) What was her age 3 years back? (iii) Sarita’s grandfather is 6 times her age. What is the age of her grandfather?...
Chapter 11 Algebra Ex 11.3 Question 1. Make up as many expressions with numbers (no variables) as you can from three numbers 5, 7 and 8. Every number should be used not more than once. Use only addition, subtractions and multiplication. Solution: Given numbers are 5,...
Chapter 11 Algebra Ex 11.2 Question 1. The side of an equilateral triangle is shown by l. Express the perimeter of the equilateral triangle using l. Solution: Given that the side of an equilateral triangle = l Perimeter of the equilateral triangle = 3 x side = 3 x l =...
