Question

In a coconut grove, (x + 2) trees yield 60 nuts per year, x trees yield 120 nuts per year, and (x - 2) trees yield 180 nuts per year. If the average yield per year per tree be 100, find the value of x.

• A. 4
• B. 2
• C. 8
• D. 6
• E. None of these

Answer 1

The correct option is A 4

$\frac{(x+2)\times 60+x\times 120+(x-2)\times 180}{x+2+x+x-2}=100\therefore x=4$