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The ratio of Mangoes and Bananas in a garden is 9 ∶ 11 respectively. The average number of mangoes and bananas is 210. What is the difference between the number of Bananas and Mangoes in the garden?

A42

B36

C52

D32

Answer:

A. 42

Read Explanation:

Let the number of Mangoes = 9x The number of Bananas = 11x ⇒ (9x + 11x)/2 = 210 ⇒ 20x = 210 × 2 ⇒ x = 21 number of mangoes = 9x = 9 × 21 = 189 number of bananas = 11x = 11 × 21 = 231 ⇒ The difference between the number of Bananas and Mangoes = 231 – 189 = 42


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