There are 28 mango trees, 42 apple trees and 21 orange trees have to b

1.	There are 28 mango trees, 42 apple trees and 21 orange trees have to be planted in rows such that each row contains the same number of trees of one variety only. The minimum number of rows in which the above trees may be planted is:1. 92. 103. 114. 13
Answer» Correct Answer - Option 4 : 13 Given - Number of Mango tree = 28 Number of Apple tree = 42 Number of Orange tree = 21 Solution - Let the minimum number of rows be n. ⇒ maximum number of plant in each row = HCF (28, 42, 21) = 7 ⇒ minimum row = (28/7) + (42/7) + (21/7) = 4 + 6 + 3 = 13 ∴ minimum number of row = 13.

There are 28 mango trees, 42 apple trees and 21 orange trees have to be planted in rows such that each row contains the same number of trees of one variety only. The minimum number of rows in which the above trees may be planted is:1. 92. 103. 114. 13

Answer» Correct Answer - Option 4 : 13

Given -

Number of Mango tree = 28

Number of Apple tree = 42

Number of Orange tree = 21

Solution -

Let the minimum number of rows be n.

⇒ maximum number of plant in each row = HCF (28, 42, 21) = 7

⇒ minimum row = (28/7) + (42/7) + (21/7) = 4 + 6 + 3 = 13

∴ minimum number of row = 13.

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There are 28 mango trees, 42 apple trees and 21 orange trees have to be planted in rows such that each row contains the same number of trees of one variety only. The minimum number of rows in which the above trees may be planted is:1. 92. 103. 114. 13

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