Question

Please disregard the writing. My grandson sent this question to me. Thank you!

Answer 1

Given:

There are given that x is the price before the increase and y are the after the increased price.

Explanation:

According to the question:

There are also given that 15% increase in their price.

So,

For the new price:

$x+15\%x$

Then,

$x+\frac{15}{100}x=x+0.15x$

Now,

y is the price after the increase,

So,

The price equation of the new price is:

$y=x+0.15x$

Final answer:

Hence, the correct option is A and C, and E.