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