NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 4: Simple Equations - Fill in the BlanksQuestion 20
Class 7 - Mathematics - Unit 4: Simple Equations - Fill in the Blanks
Question. 20
20. Sum of two numbers is 81. One is twice the other.
(a) If smaller number is x, the other number is ________.
(b) The equation formed is ________.
(c) The solution of the equation is ________.
(d) The numbers are ________ and ________.
Answer:
(a) 2x
(b) x + 2x = 81
(c) 27
(d) 54 and 27
Detailed Answer with Explanation:
Smaller = x, larger = 2x. x + 2x = 81 ⇒ x = 27. Numbers are 27 and 54.