My father

My father has a big farm. 6/8 of it were planted with mango trees, 1/2 of the remainder are guava trees and the rest 10 trees are santol trees. What is the number of all trees?

Correct result:

n =  80

Solution:


6/8 n + 1/2 • (n - 6/8n) + 10 = n

6/8•n + 1/2 • (n - 6/8•n) + 10 = n

n = 80

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Showing 1 comment:
#
Charlie
I have written my own equation like this: Let x is the total number of trees, then, the equation will be like this:

6x/8+2x/16+10=x
12x/16+2x/16+160/16=x
14x/16+160/16=x
16x=14x+160
16x-14x=160
2x=160
2x/2=160/2
x=80

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