Question

on January they sold 139 more Doughlas firs than Noble firs. The toal trees sold was 377. which of these is right for me to solve it??

n-139=377
n+139 = 377
2n +139 =377
2n+139 = 377
I think it is the first one??

Answer 1

If n Noble firs were sold, then n+139 Douglas firs were sold. So,

n + n+139 = 377 total trees
2n+139=377

Answer 2

Two times the number of trees wich is 2n right? Thanks!!!!!!!!!!!!!!!!!!!!!