Question 10 - Figure it out - Page 102 to 105 - Chapter 4 Class 7 - Expressions using Letter-Numbers (Ganita Prakash)

Transcript

Question 10 Describe situations corresponding to the following algebraic expressions: (a) 8x + 3y (b) 15x – 2x8x + 3y: This expression can describe a situation where two different items are being tallied. For example, it could be the total cost of buying 'x' books at ₹8 each and 'y' pens at ₹3 each. (b) 15x - 2x: This can describe a situation where some items are removed from a larger group. For instance, if a person has 15 cartons, and each carton contains 'x’ apples, their total is 15x. If they give away 2 of those cartons, they are removing 2x apples. The expression represents the number of items remaining.