Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

A country's population rises from 40 million to 48.4 million. What is the percentage growth over the period?

Answer and explanation

Correct answer: 21 percent

Percentage growth must be calculated relative to the initial population, not the final population. The initial population is 40 million and the final population is 48.4 million. The absolute increase is \(48.4-40=8.4\) million. Dividing this increase by the initial 40 million and multiplying by 100 gives \(\frac{8.4}{40}\times100=21\) percent.

Therefore, option C, 21 percent, is correct. The same calculation can be written with whole numbers as \(\frac{48,400,000-40,000,000}{40,000,000}\times100=21\%\). The units cancel because both populations are measured in millions. A common error is to compare the increase with the final population or to treat the difference of 8.4 million as a percentage without dividing by the starting value. Growth percentages conventionally use the starting population as the base.

Related tags

Percentage Population GrowthAbsolute GrowthPopulation CalculationDemographyPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.