How I can get cart_contents_count for childs ticket

Hi,

I wanna make price = 40$ * the number of tickets (adults + children).
For example: I buy 3 tickets for adults and 2 for children.
So total price is = $40 * (3+2)

My problem is:
How I can get numbers of tickets from children.

My code parts the:

global $woocommerce;
$number_adults = $woocommerce->cart->cart_contents_count; // I have ticket for adults

How I can get ticket for children.

It’s all 🙂