A certain school has 120 teachers. If this constitutes 30% of its whole school district, find the number of teachers in the whole school district

Question

asked Mar 10, 2020 119k views

1 Answer

Illia Tereshchuk · Answer 1 · 2020-03-15T08:23:32+0000

If 120 teachers is 30%, set an equal proportion to find the total amount.

(120)/(x) =
(30)/(100) ; cross multiply to get 120*100 = 30x; multiply

12000 = 30x; divide both sides by 30

400 = x or 400 teachers total