Question

Four out of 10 adults in a certain city buy their drugs at large drug stores. 14) If this city has 34,000 adults, how many of these adults would you expectto buy their drugs at large drug stores?

Answer 1

We know that, in that city, four out of 10 adults buy their drugs at large drug stores.

Thus, the following fraction of adults are expected to buy their drugs at large drug stores:

`(4)/(10)`

If there were, for example, 100 adults in the city, 40 would be expected to buy their drugs at large drug stores.

Notice that we found the above result in that example by multiplying the fraction 4/10 by the number of adults in the city:

`(4)/(10)\cdot100=4\cdot(100)/(10)=4\cdot10=40`

Thus, since that city has 34000 adults, the number of adults expected to buy their drugs at large drug stores is given by:

`(4)/(10)\cdot34000=4\cdot(34000)/(10)=4\cdot3400=13600`

Therefore, the answer is 13600.