A school district needs 3 teachers for every 70 children. They expect to have 14,700 children in the district next year. At this time, they have 612 teachers. How many more teachers are needed?

Question

anonymous · Answer

can someone explain how you get 18

jim_thompson5910 · Answer

you solve 3/70 = x/14700 for x to get


3/70 = x/14700

3*14700 = 70x

44100 = 70x

70x = 44100

x= 44100/70

x = 630


So 630 teachers are needed. There are currently 612 of them, so you need 630 - 612 = 18 teachers

anonymous · Answer

70 students=3 teachers or 70s=3t
14700s= (70*210)s
(70*210)s=(70s)*210=(3t)*210=630t
So, 630 teachers required for 14700 students. There are 612 already present. So, 630-612=18

anonymous · Answer

for every 70 students, there are 3 teachers
So, because there are 14700 students, there needs to be 630 teachers
That means that since you already have 612 teachers, you need 18 more