Question

Rashi is going to plant 54 oak trees and 27 pine trees. She wants to plant them in such a way that all rows have the same number of trees and each row is made up of only one type of tree. What is the greatest number of trees Rashi can have in each row?

• A. 54
• B. 9
• C. 27
• D. None of These

Answer 1

The correct option is C

27

For the greatest number of trees, Rashi needs to find the largest number which is divisible by 54 and 27 both.

This can be done by finding the Highest Common Factor (HCF) of 54 and 27.

54= 2 $\times$ 3 $\times$ 3 $\times$ 3

27= 3 $\times$ 3 $\times$ 3

So, the HCF will be 3 $\times$ 3 $\times$ 3 =27

Therefore 27 trees can be planted in each row.