Question

the number N of aluminum cans used each year varies directly as the number of people p using the cans. if 58 people us 23,432 cans in one year, how many cans are used in a cith which has a population of 1,956,000

Answer 1

N = kp

find k:

23432 = 58k

Now, having k,

N = 1956000k

Or, in other words,

N/1956000 = 23432/58