Question

A pet store has k tanks of fish. Each tank has 26 fish. Using k, write an expression for the total number of fish in the store.

Answer 1

Recall that:

`a* n=\underbrace{a+a+\cdots+a\,}_{$ n $\text{ times}}.`

Since the pet store has k tanks with 26 fish on each tank, then the pet store has:

`\underbrace{26+26+\cdots+26\,}_{k\text{ times}}`

fish in total.

Now, notice that:

`\underbrace{26+26+\cdots+26\,}_{k\text{ times}}=26* k=26k.`

Answer:

`26k.`