Question

Eight out of ten fish are trout. How many trout are there out of 40 fish?

Answer 1

Out of these 40 fish 32 are trout.

Explanation:

The ratio relationship for this is `8:10 -> t:40` where `t` is the number of trout. Turning this into an equation and solving for `t` gives:

`8/10 = t/40`

`40*8/10 = 40*t/40`

`320/10 = cancel(40)*t/cancel(40)`

`32 = t`

Answer 2

32

Explanation:

40 is the fourth multiple of 10, which means that `10 xx 4 = 40`.

Then, if 8 out of 10 fish are trout, the number of trout in 40 fish will be the fourth multiple of 8, which is equal to `8 xx 4 = 32`.