Lesson eLearning

A park covers 4000 square metres. If planners want 20 trees per 100 square metres, how many trees are needed?

hard MCQ 3 marks Class 4 · EVS · Nandita in Mumbai
  1. A) 800
  2. B) 900
  3. C) 1000
  4. D) 1200
Answer
A) 800

The correct answer is A) 800 — Option A is correct.

Step-by-step solution

  1. Divide the total area by 100 to find how many 100‑square‑metre blocks are in the park: 4000 ÷ 100 = 40.
  2. Multiply the number of blocks by the desired tree density: 40 × 20 = 800.
  3. Hence, 800 trees are needed for the park.
  4. Option A is correct.
Common mistake: Misreading the tree density per block or incorrectly multiplying the numbers

Concept tested: Tree density planning

Published · How this solution was prepared and checked

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