Question
In a big orchard, 50% of the trees are guava trees, number of orange trees is 40% of the number of guava trees and number of banana trees is 75% of the number of orange trees. If the number of banana trees is 180, then find the number of trees in the orchard.
Solution
Let total number of trees in the orchard be 100x
Number of guava trees = 0.50 Γ 100x = 50x
Number of orange trees = 0.40 Γ 50x = 20x
Number of banana trees = 0.75 Γ 20x = 15x
So, 15x = 180
Or, x = 12
Total number of trees in the orchard = 100 Γ 12 = 1200
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